Desktop Gardening, Or Growing Vegetables in Thin Air

vegetable gardenWell, not quite thin air, because plants, like the rest of us, require nutrients and water to grow. Although the word “aeroponics” does not show up in either of the dictionaries I use for handy reference, and is totally ignored by my spellchecker, it is actually common enough that it should be appearing in any current dictionary of the English language. I admit that I had no idea what the word meant when Yehudah asked me the following shaylah:

“To overcome the many problems that may be involved in purchasing products during shemittah, we want to purchase a large aeroponics kit and grow our own vegetables. Will this present us with any halachic problems in terms of either the laws of shemittah, or the laws of kelayim?”

And so, I began my education about this subject. This is what I discovered:

Aeroponics is a method of growing vegetables or herbs without soil by spraying the plant roots with water and nutrients (as opposed to hydroponics where the roots are submerged in a nutrient solution). Although it can be done on a commercial scale, the company Yehudah contacted sells aeroponic kits for growing herbs and vegetables in the comfort of one’s home. Each kit includes the seeds and nutrients required for specific types of plants, a complete, self-contained, open-top growing tank that includes its own light fixtures and instructions on how to make it all work. Just add water and electricity to run the pump and lights.

The company advises growing lettuce, herbs, tomatoes, peppers, or strawberries each in its own tank, since they have quite different needs. Nevertheless, the first question we will discuss is whether this is a halachic requirement to do so because of the prohibition of kelayim.

WHAT IS KELAYIM?

It is important to clarify a common misconception. The prohibition of kelayim is not the creation of a new species; it is the appearance that one is mingling two species together. This is why hauling loads with two species of animal, grafting one tree species onto another, mixing wool and linen in a garment or planting grains in a vineyard are all Torah violations of kelayim, although none of these acts affect the genetic make-up of the species.

Yehudah’s question involves two halachic topics:

  1. Kelayim

Could someone gardening on his desktop possibly violate the mitzvah of kilei zera’im, which prohibits planting two species together or near one another? Violating this prohibition requires three basic conditions, all of which Yehudah met:

  1. The prohibition applies to herbaceous, as opposed to woody plants, meaning that it does not apply to trees and shrubs, but it does apply to vegetables and many herbs. Thus, one may plant seeds of different trees together, yet one is forbidden to plant a mix of vegetable seeds (Rambam, Hilchos Kelayim 1:6).
  2. The prohibition of kilei zera’im applies only to edible crops (Rambam, Hilchos Kelayim 1:4). Thus, one may plant seeds of different ornamental flowers and grasses within close proximity.
  3. It applies only in Eretz Yisroel (Kiddushin 39a), and is min hatorah according to most halachic authorities, even today (implied by Rambam, Hilchos Kelayim 1:1). (However, note that in Rashi’s opinion [Shabbos 84b, s. v. ve’achas] the prohibition of kilei zera’im in Eretz Yisroel is only miderabbanan and Tosafos [Yevamos 81a, s.v. mai] contends that although kilei zera’im is essentially min hatorah, in our era it is only rabbinic because most of the Jewish people do not currently live in Eretz Yisroel.) Therefore, someone in Chutz La’Aretz may plant his backyard garden with a wide variety of herbs and vegetables, without any concern for how close they are, whereas in Eretz Yisroel, someone planting a garden patch must be very careful to keep the different species separate (Rambam, Hilchos Kelayim 1:3). I will discuss later how far apart one must plant different species to avoid violating this prohibition (see Chazon Ish, Hilchos Kelayim 6:1).
  4. Shemittah

One may not plant in Eretz Yisroel during shemittah. Does planting this indoor garden in Eretz Yisroel violate the laws of shemittah?

Yehuda’s question requires analyzing the following subjects:

Do these mitzvos apply when planting indoors?

Would they apply when planting outdoors in a pot or planter that is disconnected from the ground?

Do they apply when one is not planting in soil?

INDOORS

Two Talmudic passages discuss whether agricultural mitzvos apply indoors. In Eruvin (93a), the Gemara prohibits planting grain in a vineyard that is underneath a roof extending from a house. This passage implies that agricultural mitzvos apply within physical structures.

On the other hand, the Talmud Yerushalmi (Orlah 1:2) discusses whether three agricultural mitzvos, orlah (the prohibition to use fruit produced in the first three years of a tree’s life), maaser (tithing produce), and shemittah, apply to indoor plants. The Yerushalmi rules that whereas orlah applies, there is no requirement to separate maaser on produce grown indoors. The Yerushalmi questions whether shemittah applies to indoor produce, but does not conclude clearly whether it does or not.

WHY IS ORLAH DIFFERENT FROM MAASER?

The Yerushalmi notes that when the Torah instructs us to separate maaser, it states: You shall tithe all the produce of your planting, that which your field produces each year (Devarim 14:22). Since the Torah requires maaser only on produce of a field, there is no requirement to separate maaser from what grows indoors, since, by definition, a field is outdoors. Therefore, one need not separate maaser min hatorah when planting indoors, even if one is planting directly in the soil floor of the structure. (The Rishonim dispute whether there is a rabbinic requirement to separate terumos and maasros when planting in the ground within a building; see Rambam and Raavad, Hilchos Maasros 1:10.)

However, when the Torah describes the mitzvah of orlah, it introduces the subject by stating When you will enter the Land (Vayikra 19:23). A tree planted indoors is definitely in the Land of Israel, and thus is included within the parameters of this mitzvah, even if it is not in a field.

SHEMITTAH INDOORS

Do the laws of shemittah apply to produce grown indoors? Does shemittah apply only to a field, or to anything planted in the Land of Israel?

The Yerushalmi notes that when the Torah discusses the mitzvah of shemittah, it uses both terms, land (Vayikra 25:2) and field (Vayikra 25:4). It is unclear how the Yerushalmi concludes and the poskim dispute whether the mitzvah of shemittah applies indoors in Eretz Yisroel. Ridbaz (Hilchos Shevi’is, end of Chapter 1), Chazon Ish (Shevi’is 22), and Pnei Moshe all rule that it does; Pe’as Hashulchan (20:52) rules that it does not. Most later authorities conclude that one should not plant indoors during shemittah, at least not in the soil. I will discuss, shortly, whether one may plant during shemittah indoors hydroponically or in an indoor area where the dirt floor is covered.

INDOOR KELAYIM

May one plant different species next to one another indoors? Does the prohibition of kelayim apply to produce planted under a roof?

Based on the Talmud Yerushalmi we quoted above, we should be able to establish the following rule:

When the Torah commands that a specific mitzvah applies to the land, it is immaterial whether the planting is indoors or outdoors. However, when the Torah commands that a mitzvah applies to a field, it does not apply indoors. As noted above, an indoor area can never be called a field.

How does the Torah describe the mitzvah of kilei zera’im? The Torah states “you shall not plant kelayim in your field” (Vayikra 19:19), implying that the mitzvah does not apply indoors. Thus, we should conclude that there should be no prohibition min hatorah against planting herbs or vegetables proximately if they are indoors. (Nevertheless, both the Yeshuos Malko [Hilchos Kelayim 1:1] and the Chazon Ish rule that kilei zera’im does apply indoors and apparently disagree with the above analysis. I will take this into consideration later.) However, it is probably prohibited miderabbanan, according to the opinion that the Sages required tithing produce grown indoors.

BUT…

At this point, the discerning reader will note a seeming discrepancy with the passage from Eruvin 93a that I cited earlier. The Gemara rules that one may not plant grain in a roofed vineyard, implying that kelayim does apply indoors. This seemingly conflicts with my conclusion based on the Yerushalmi that one may plant different herbs or vegetables proximately indoors, without violating the prohibition of kelayim.

THE SOLUTION: GRAPES VERSUS VEGETABLES

The answer is that there is a major halachic difference between the two cases: Planting grain in a roofed vineyard violates kilei hakerem, planting other crops in a vineyard. Although both kilei hakerem and kilei zera’im are called kelayim, kilei hakerem is a separate mitzvah and is derived from a different pasuk than the one prohibiting kilei zera’im, planting herbaceous species together. The Torah commands us about kilei hakerem by stating: “You shall not plant your vineyard with kelayim (Devorim 22:9), using the word vineyard, not field. Whereas a field cannot be indoors, a vineyard could.

At this point, we have resolved the first of our questions asked above:

“Do these mitzvos apply when planting in a covered area?”

The answer is that planting kelayim species should seemingly not apply, although some prominent authorities disagree. Shemittah does apply, according to most poskim.

FLOWERPOTS

We now progress to our next question:

Do agricultural mitzvos apply to plants growing in Eretz Yisroel in closed pots and planters that are separated from the ground and yet exposed to the elements?

The Mishnah (Shabbos 95a) teaches that someone who plants in a flowerpot that has a hole in its bottom, called an atzitz nakuv, violates Shabbos as if he planted in the earth itself. However, planting in a flowerpot that is fully closed underneath, called an atzitz she’aino nakuv, is forbidden only because of rabbinic injunction and does not involve a Torah-prohibited violation of Shabbos. The same categories usually apply to agricultural mitzvos: plants in a pot with a hole in the bottom are equivalent to being in the ground itself; those whose bottom is completely sealed are included in agricultural mitzvos by rabbinic injunction.

Therefore, one must separate terumah and maaser from produce grown in pots or planters, whether or not the containers are completely closed underneath, and one would violate kelayim if one planted two species near one another in a flowerpot or other container.

There are some exceptions to this rule. In some instances, planting in a closed container is the same as planting in the ground. According to the Rambam [Hilchos Maaser Sheni 10:8] and the Shulchan Aruch [Yoreh Deah 294:26], orlah applies min hatorah to a tree planted in a closed flowerpot. The reason for this phenomenon is that a tree root will, with time, perforate the bottom of its pot, and therefore, it is already considered to have a hole and be part of the ground below.

SHEMITTAH IN A HOTHOUSE

On the other hand, there are also poskim who contend that shemittah does not apply at all, even miderabbanan, to items planted in a planter or flowerpot whose bottom is completely closed. What is the halacha if one plants in a covered area in a pot that is completely closed underneath? May one be lenient, since the pot is both indoors and is also an atzitz she’aino nakuv, which is not considered connected to the earth min hatorah? This question leads us directly to the following question that Israeli farmers asked, about sixty years ago: May one plant in a hothouse during shemittah, in a closed-bottom vessel? As I mentioned above, although some authorities permit planting in the soil indoors during shemittah, the consensus is to be more stringent. However, many poskim permit planting in pots in a hothouse, if its floor is covered with a thick material, such as heavy plastic or metal (see Chazon Ish, Shevi’is 26:4; Mishpatei Aretz pg. 239; however, cf. Shu’t Shevet HaLevi who prohibits this).

AEROPONICS AND SHEMITTAH

At this point, we can discuss our original question: Aeroponics, like a hothouse, means growing indoors, and is also similar to planting atop a floor that is covered with metal or heavy plastic. Based on the above discussion, we may conclude that most authorities would permit planting aeroponically during shemittah, provided that the bottoms of the tanks are metal or plastic.

WHAT ABOUT KIL’EI ZERAIM?

We still need to explore whether desktop planting violates the laws of kilei zera’im.

I concluded above that there is probably only a rabbinic prohibition of kilei zera’im on indoor planting, but that some prominent authorities prohibit it min hatorah. Can we offer a solution for Yehudah’s plans? To answer this we need to address another issue.

KEEP YOUR DISTANCE

As I mentioned in the beginning of this article, kelayim occurs when different species are mingled together. If there is enough distance between the plants, no mingling is transpiring.

How far apart must I plant herbs or vegetables to avoid violating kelayim? This is a complicated topic, and its answer is contingent on such factors as how and what one is planting. I will, however, go directly to the conclusion that affects our case.

Since the desktop garden involves only herbs and vegetables and only a single plant or a few plants of each species, the halacha requires only a relatively small distance between species. Min hatorah one is required to plant only one tefach apart; the additional space requirement is rabbinic (see Rambam, Hilchos Kelayim 3:10). The poskim dispute how distant one is required to avoid a rabbinic prohibition. Some require that the plants are at least three tefachim apart [about ten inches] (Rashi, Shabbos 85a), whereas others determine that it is sufficient for the plants to be only 1½ tefachim apart [about five inches] (Rambam, Hil. Kelayim 4:9; Shulchan Aruch, Yoreh Deah 297:5). In the case of the aeroponically-grown produce, since the tanks are completely closed underneath, they have, at worst, the halachic status of atzitz she’eino nakuv, a closed pot or planter, considered part of the ground only because of rabbinic injunction, but not min hatorah. We can, therefore, conclude that as long as the seeds are placed more than a tefach apart, we avoid any Torah prohibition. As far as the possible rabbinic prohibition if the plants are only a bit more than one tefach apart, we could additionally rely on the likelihood that kilei zera’im does not apply indoors in an eino nakuv planter.

Having completed the halachic research, we corresponded with the company that produces the desktop planting kits, asking them how far apart are the holes in which one “plants” the seeds, and how many different herbs and vegetables can be planted in a single tank.

The company replied that the kit usually has seven holes, each four inches apart from the other, center to center. When planting peppers and tomatoes, which grow larger than the greens or herbs, the company recommends plugging four of the holes and using only three, which are far enough apart to avoid any kelayim issue, according to our conclusion. However, when planting herbs and greens, the distance between the holes is just about the distance that might present a halachic problem. I therefore advised Yehudah to plant in alternative holes, even when planting herbs of different varieties.

The Heter Mechirah Controversy

carotsThe Heter Mechirah Controversy

Several shmittah cycles ago I was working as a mashgiach for a properly-run American hechsher. One factory that I supervised used to manufacture breading and muffin mixes. This company was extremely careful about checking its incoming ingredients: George, the receiving clerk who also managed the warehouse, kept a careful list of what products he was to allow into the plant and what kosher symbols were acceptable.

On one visit to the plant I noticed a problem due to no fault of the company. For years, the company had been purchasing Israeli-produced, freeze-dried carrots with a reliable hechsher. The carrots always arrived in bulk boxes with the Israeli hechsher prominently stamped in Hebrew and the word KOSHER prominently displayed in English. George, who always supervised incoming raw materials, proudly showed me through “his warehouse” and noted how he carefully marked the arrival date of each new shipment. I saw crates of the newest shipment of Israeli carrots, from the same manufacturer, and the same prominently displayed English word KOSHER on the box. However, the Hebrew stamp on the box was from a different supervisory agency, one without the same sterling reputation. The reason for the sudden change in supervisory agency was rather obvious when I noted that the Hebrew label stated very clearly “Heter Mechirah.”

Let me explain the halachic issues that this product entails.

The Torah (Vayikra 25:1-7) teaches that every seventh year is shmittah and prohibits working the land of Eretz Yisroel. During that year, one may not plough, plant, or work the field in any way. Furthermore, the farmer must treat whatever grows on his land as ownerless, allowing others to pick and keep his fruit. They may only take as much as their family will be eating, and the farmer also may take this amount. Many other laws apply to the produce that grows during shmittah, including, for example, that one may not sell the produce in a business manner nor may one export it outside Eretz Yisroel.

For the modern farmer, observing shmittah is indeed true mesiras nefesh, since among the many other concerns that he has, he also risks losing customers who have been purchasing his products for years. For example, a farmer may be selling his citrus or avocado crop to a distributor in Europe who sells his produce throughout the European Community. If he informs his customer that he cannot export his product during shmittah year, he risks losing the customer in the future.

Of course, a Jew realizes that Hashem provides parnasah and that observing a mitzvah will never hurt anyone. Therefore, a sincerely observant farmer obeys the Torah dictates knowing that Hashem attends to all his needs. Indeed, recent shmittos have each had numerous miracles rewarding observant farmers in this world for their halachic diligence. Who can possibly imagine what reward awaits them in Olam Haba!

Unfortunately, the carrot farmer here was not committed to this level of bitachon and instead explored other options, deciding to rely on heter mechirah. He soon discovered that his regular, top-of-the line hechsher would not allow this, so he found an alternative hechsher that allowed him to be lenient, albeit by clearly forewarning customers who may consider this product non-kosher. Although he realized that sales would suffer without his regular hechsher, he figured that selling some product is better than selling none.

WHAT IS HETER MECHIRAH?

The basic concept of heter mechirah is that the farmer sells his land to a gentile, who is not required to observe shmittah. Since a gentile now owns the land, the gentile may farm the land, sell its produce, and make a profit. The poskim dispute whether a Jew may work land owned by a gentile during shmittah (Tosafos, Gittin 62a s.v. ayn odrin, prohibits; whereas Rashi, Sanhedrin 26a s.v. agiston, permits).

IS THIS ANY DIFFERENT FROM SELLING ONE’S CHOMETZ FOR PESACH?

Although some poskim make this comparison (Shu’t Yeshuos Malko, Yoreh Deah #53), many point out differences between selling chometz to a gentile and selling him land in Eretz Yisroel. Indeed although the Mishnah (Pesachim 21a) and other early halachic sources (Tosefta, Pesachim 2:6) mention selling chometz to a non-Jew before Pesach, no early source mentions selling land of Eretz Yisroel to avoid shmittah (Sefer Hashmittah pg. 71). The earliest source I found discussing this possibility was an eighteenth century responsum penned by Rav Mordechai Rubyou, the Rosh Yeshivah in Hebron at the time, who discusses the tribulations of a Jew owning a vineyard in Eretz Yisroel in that era (Shu’t Shemen Hamor, Yoreh Deah #4. This sefer was published posthumously in 1793.)

HISTORY OF MODERN HETER MECHIRAH

Before explaining the halachic background to the heter mechirah question, I think it is important to understand the historical context of the shaylah.

Rav Yechiel Michel Tukachinski, one of the great twentieth century poskim of Eretz Yisroel, describes the history and development of the use of heter mechirah. (My source for most of the forthcoming historical material is his work, Sefer Hashmittah.)

The first modern shmittah was in the year 5642 (1882), although at that time there were a mere handful of Jewish farmers in Israel, located in Petach Tikvah, Motza, and Mikveh Yisroel. The highly observant farmers in these communities were uncompromising in their commitment to observe shmittah in full halachic detail. Apparently, at the same time there were some Sefardic farmers in Israel whose rabbonim did allow them to sell their fields to a gentile for the duration of shmittah (see Shu’t Yeshuos Malko, Yoreh Deah #53; Shu’t Yabia Omer 3:Yoreh Deah #19:7).

By the next shmittah of 5649 (1889), there was already a much larger Jewish agricultural presence in Eretz Yisroel. Prior to that shmittah year, representatives of the developing Israeli agricultural communities approached several prominent Eastern European gedolim,laiming that the new yishuv could not survive financially if shmittah were to be observed fully and that mass starvation would result. Could they sell their land to a gentile for the duration of shmittah and then plant the land and sell its produce?

THE BEGINNINGS OF A CONTROVERSY

Rav Naftali Hertz, the Rav of Yaffo, who also served as the Rav of most of the agricultural communities involved, directed the shaylah to the gedolei haposkim of the time, both in Israel and in Europe. The rabbonim in Europe were divided, with many prominent poskim, including Rav Yehoshua Kutno, Rav Yosef Engel and Rav Shmuel Mahliver, approving the sale of the land to non-Jews as a horaas shaah, a ruling necessitated by the emergency circumstances prevailing, but not necessarily permitted in the future. They permitted the heter mechirah, but only with many provisos, including that only non-Jews perform most agricultural work. On the other hand, many great European poskim prohibited this heter mechirah, including such luminaries as the Netziv (Rav Naftali Tzvi Yehudah Berlin, the Rosh Yeshivah of the preeminent yeshiva of the era in Volozhin, Lithuania), the Beis HaLevi (3:1) (Rav Yosef Dov HaLevi Soloveichek), the Aruch HaShulchan (Rav Yechiel Michel Epstein), and Rav Dovid Karliner.

Rav Yitzchak Elchanan Spector, the Rav of Kovno, Lithuania, who many viewed as the posek hador, ruled that Rav Hertz could perform the sale and instructed him to have the great poskim of Yerushalayim actuate the sale.

This complicated matters, since the Ashkenazi Rabbonei Yerushalayim universally opposed the heter mechirah and published a letter decrying it stridently. This letter, signed by the two rabbonim of Yerushalayim, Rav Yehoshua Leib Diskin and Rav Shmuel Salant, and over twenty other gedolim and talmidei chachamim, implored the farmers in the new yishuv to keep shmittah steadfast and expounded on the divine blessings guaranteed them for observing shmittah. The letter also noted that Klal Yisroel was punished severely in  earlier times for abrogating shmittah (see Avos Chapter 5). As Rashi (Vayikra 26:35) points out, the seventy years of Jewish exile between the two batei hamikdash correspond to the exact number of shmittos that were not observed from when the Jews entered Eretz Yisroel until the exile. The great leaders of Yerushalayim hoped that if Klal Yisroel observed shmittah correctly, this would constitute a collective teshuvah for the sins of Klal Yisroel and would usher in the geulah.

Rav Hertz, who had originally asked the shaylah, was torn as to what to do. Although he had received letters from some of the greatest poskim of Europe permitting the mechirah, the poskei Yerushalayim were adamant in their opposition. He decided not to sell the land himself, but arranged mechirah for those who wanted it through the Sefardic rabbonim in Yerushalayim, who had apparently performed this mechirah in previous years.

What happened? Did the Jewish farmers observe the shmittah as cajoled by the Rabbonei Yerushalayim, or did they rely on heter mechirah? Although the very committed farmers observed shmittah according to the dictates of the Gedolei Yerushalayim, many of the more marginally observant farmers succumbed to the pressure and relied on heter mechirah. Apparently, many farmers were subjected to considerable financial and social pressure not to observe shmittah.

Prior to shmittah year 5656 (1896), Rav Hertz again considered what to do in the coming shmittah, and approached the Rabbonei Yerushalayim. This time, both Rav Shmuel Salant and Rav Yehoshua Leib Diskin approved the mechirah and even suggested to Rav Hertz how to arrange this mechirah in a halachically approved fashion.

WHAT CHANGED?

Why were the very same rabbonim who vehemently opposed the mechirah seven years earlier not opposed this time? Initially these rabbonim felt that since we had now merited returning to Eretz Yisroel, we should make sure to observe all the mitzvos of Eretz Yisroel without compromise, and evading shmittah with heter mechirah runs totally counter to this spirit. However, upon realizing that few farmers had observed the previous shmittah properly, the feeling of these great gedolim was that without the option of heter mechirah, most farmers would simply conduct business as usual and ignore shmittah completely. Therefore, it was better to permit heter mechirah while at the same time encourage farmers not to rely upon it.

Prior to the next shmittah in 5663 (1903) Rav Hertz re-asked his shaylah from the rabbonim of Yerushalayim, Rav Shmuel Salant, and the Aderes, Rav Eliyahu Dovid Rabinowitz Teumim (Rav Diskin had passed on in the meantime), since the original approval stipulated only the 1896 shmittah year. These rabbonim felt that the circumstances had not changed and that there was still a need for heter mechirah. Rav Hertz himself passed away before the heter mechirah was finalized, and his son-in-law, Rav Yosef HaLevi, apparently a talmid chacham of note, finalized the mechirah in his stead, following the instructions of the rabbonei Yerushalayim.

Seven years later (5670/1910), Rav Avraham Yitzchak Kook was the Rav of Yaffo and continued the practice of the mechirah, while at the same time encouraging those who would observe shmittah correctly to do so. As Rav he continued this practice of performing the heter mechirah for the several subsequent shmittos of his life.

In addition, Rav Kook instituted a new aspect to heter mechirah. Prior to his time, the heter mechirah involved appointing an agent to sell the land for the years of shmittah. Rav Kook improvised a facet of the mechira enabling even a farmer who did not avail himself of the mechirah to be included since it would be in his best interest to have some heter when he works his field rather than totally desecrating the Holy Land in the holy year.

Although there is merit in protecting the farmer from his sin, a practical question now results that affects a consumer purchasing this farmer’s produce. If the farmer did not authorize the sale, does the produce indeed not have the sanctity of shmittah produce? For this latter reason, many individuals who might otherwise accept heter mechirah produce do not.

By the way, although the original heter mechirah specified that gentiles must perform all plowing, planting and harvesting, this provision is no longer observed by most farmers who rely on heter mechirah. Many farmers who rely on heter mechirah follow a “business as usual” attitude once they have dutifully signed the paperwork authorizing the sale. Indeed, who keeps the profits from the shmittah produce, the Jew or the non-Jew to whom he sold his land? One can ask — is this considered a sale?

Another point raised is that although Chazal also contended with much laxity in observing the laws of shmittah, they did not mention selling the land to evade the mitzvah. This is underscored by the fact that there are indeed precedents where Chazal mention ways to avoid observing mitzvos. For example, the Gemara mentions methods whereby one could avoid separating maaser for those who want to evade this mitzvah, although Chazal did not approve of doing so. Furthermore, when Hillel realized that people were violating the halachos of shmittas kesafim, he instituted the pruzbul. Yet no hint of avoiding shmittah by selling land to a gentile is ever mentioned, thus implying that there is halachic or hashkafic difficulty with this approach (Sefer Hashmittah pg. 82).

SELLING ERETZ YISROEL

In addition to the question of whether one should evade performing a mitzvah of the Torah, the issue of heter mechirah involves another tremendous halachic difficulty. How can one sell any land of Eretz Yisroel when the Torah prohibits selling it to a non-Jew (Avodah Zarah 20a), and Chazal prohibit even renting the land (Mishnah, Avodah Zarah 20b)?

Different poskim have suggested various approaches to avoid this prohibition. Some contend that selling land temporarily with an expressed condition that it returns to the owner preempts the violation (Shu’t Shemen Hamor, Yoreh Deah #4), while others permit this since the sale is to assist the Jewish presence in Eretz Yisroel (Shu’t Yeshuos Malko, Yoreh Deah #55; Yalkut Yosef pg. 666, quoting Rav Reuven Katz, the late rav of Petach Tikvah). Others contend that the prohibition extends only to selling land to an idol-worshipper but not a gentile who does not worship idols (Sefer Hashmittah pg. 74; Yalkut Yosef pg. 665, quoting Mizbayach Adamah), whereas still others maintain that one may sell land to a gentile who already owns land in Israel (Shabbas Ha’aretz, Mavo 12). The original contracts approved by the rabbonei Yerushalayim incorporate some other aspects of the way the sale transpires to avoid this problem (Sefer Hashemittah pg. 75). Each of these approaches is halachically controversial. In fact, the problem of selling the land to a gentile is so controversial that many poskim consider such a sale invalid because of the principle ein shaliach lidvar aveirah, that transacting property through agency in a halachically unacceptable manner is invalid (Chazon Ish, Shvi’is 24:4).

Among contemporary poskim there is wide disagreement whether one may eat produce manufactured through heter mechirah; some contending that one may, others ruling that both the produce and the pots are non-kosher, whereas others accept that the pots should not be considered non-kosher although one should carefully avoid eating heter mechirah produce. Because of the halachic controversies involved, none of the major hechsherim in North America approve heter mechirah produce. Someone visiting Eretz Yisroel during shmittah who wants to maintain this standard should clarify in advance what he intends to do.

FRUITS VERSUS VEGETABLES

Some rabbonim ruled that the fruits produced under heter mechirah may be treated as kosher, but not the vegetables. The reason for this distinction follows:

SEFICHIM

The Torah permitted the use of any produce that grew on its own without working the field during shmittah. Unfortunately though, even in the days of Chazal, it was common to find Jews who deceitfully ignored shmittah laws. One practice of enterprising, unscrupulous farmers was to plant grain or vegetables and market them as produce that grew on its own. To make certain that these farmers did not benefit from their misdeeds, Chazal forbade all grains and vegetables, even those that grew on their own, a prohibition called sefichim, or plants that sprouted.

Several exceptions were made, including that produce of a non-Jew’s field is not prohibited as sefichim. Thus, if the heter mechirah is considered a charade and not a valid sale, the grain and vegetables growing in a heter mechirah field are prohibited as sefichim.

WHY NOT FRUIT?

Chazal did not extend the prohibition of sefichim to fruit because there was less incentive for a cheating farmer. Although trees definitely thrive when pruned and attended to, they will produce even if left unattended for a year. Thus, the farmer has less incentive to tend his trees.

“GUARDED PRODUCE”

I mentioned above that a farmer must allow others to help themselves to the produce that grows on his trees and fields during shmittah. What is the halacha if a farmer refused to allow others access to his produce during shmittah?

The rishonim dispute whether this fruit is forbidden. Some contemporary poskim prohibit the use of heter mechirah fruit on the basis that since heter mechirah is invalid, this fruit is now considered “guarded,” and therefore forbidden. Other poskim permit the fruit because they rule that working an orchard or treating it as private property does not prohibit its fruit.

What about our carrot muffins? If we remember our original story, the company had unwittingly purchased heter mechirah carrots. The hechsher required the company to return all unopened boxes of carrots to the supplier and to find an alternative source. However, by the time I discovered the problem, muffin mix using these carrots had been produced bearing the hechsher’s kashrus symbol and were already distributed. The hechsher referred the shaylah to its posek, asking whether they were required to recall the product from the stores as non-kosher, or whether it was sufficient to advertise that an error had occurred and allow the customer to ask his individual rav for halachic guidance.

What would you advise?