Q&A

Is it permissible to plant a tree from a lemon tree scion grafted onto a hushhash (sour orange) rootstock? Is there a comprehensive list of all the permissible grafting combinations? Are there any nurseries that follow halacha?

If I bought sapling for my garden at home, when I bought them from a person who I don’t know (he looks like he is religious; he was wearing a kipa), is there a problem for me to plant them in my garden? Please note that there are five different trees: 1) lemon, 2) orange, 3) tangerine, 4) pomelo, 5) guava.

I am Ashkenazi and avoid eating kitniyot on Pesach. I would like to find out if the prohibition against eating legumes applies to canola oil. My understanding is that this oil is produced from rapeseed (liftit). Also: if canola oil is permitted, then would it also be permitted to eat chocolate when it says on the package "includes rapeseed" (מכיל לפתית)?

How is it possible to obtain amaranth and quinoa for Pesach, since they don't have kosher-for-Pesach certification? It is possible to buy them without a special Pesach certification, check them carefully, and eat them on Pesach?

After baking matzot mitzvah, we put all the matzot together and we took challah with a blessing. Just then, accidentally, the challah got mixed up with all of the questionable matzot given to the children following the matzah baking. When I noticed what had happened, I took the matzot from the children. Most probably the challah was not eaten, but my heart is very heavy about the whole thing. How do I go about rectifying the matter?

I wanted to know—can garden cress (rashad) be used as maror? Garden cress is an herb, very similar to mustard, and its stems are very sharp-tasting. It is, of course, edible. It is also easier to digest despite its spiciness, as opposed to sharpness like that of sechug, since it passes more quickly (similar to wasabi, Japanese horseradish, for those who are familiar).

Is it possible to fulfill the mitzva of eating maror on lettuce grown hydroponically?

Is wheat conditioned (where the kernels are exposed to moisture before being milled) in modern milling? There is a responsum by Rabbi Epstien in Chevel Nachalato about wheat conditioning (letita). I recently heard that this is not done today (including to a taped conversation with a professional on the matter; yet I don't know who the speaker is and what the context of the discussion). My question is if conditioning is still performed in the wheat milling process, or has technology changed and with it the halacha with regarding to chametz. Have the rabbis recently reinvestigated the matter? Thank you!

I have celiac. In recent years, gluten-free matzah has now been made available. I'm somewhat confused: leavening is caused by the gluten, so how can I observe the mitzvah of eating matzah on Seder night by eating matzah that can't become leavened?

I have a garden in my small backyard in Brooklyn. My backyard is largely concrete with a small rectangle of soil in the back right corner. In the front left corner of the soil area, there is a single old grapevine that has been there since before we purchased our house 8 years ago. It produces grapes. I recently learned that Kilei HaKerem applies in Chu"l and wanted to make sure we arrange things properly. I have four basic questions:

(1) About one foot behind the trunk of the grapevine (i.e, the part where it comes out of the ground) we built a raised-garden bed (which sits on the soil). The garden bed is made out of wood and is two feet high. We usually plant lettuces, squash, and cucumbers in that garden bed. Do I have to worry at all about what is planted in that raised bed and its proximity to the trunk grapevine?

(2) To the right of the trunk of the grapevine we plant carrots and lavender in the ground. Those plantings are at least two feet away from where the grapevine comes out of the ground. Do we need to worry about that? In general, how far away do we need to make sure to start other plantings?

(3) In front of the grapevine, on the concrete section of my backyard we have some planters with herbs in them. Do we have to worry about proximity to the grapevine?

(4) We don't trellis the vine. It tends to spread out in lots of directions as vines tend to do. Do we have to worry about proximity to the actual vine part or just the trunk? If it is not too much of an imposition, I would be grateful if you could provide citations to support your answers. I would love to learn about these things inside the relevant sources.