I haven't studied Tractate Kilayim. I know you can't plant grapes with wheat. What about, say: Jazz apple = Royal Gala apple X Braeburn apple ? Nectarine = Peach X Plum ? Nectaplum = Nectarine X ...
What's the correct Brocho to say on Hearts of Palm?
How can we say in Al Hamichyah ונאכל מפריה (eat of its fruit) after ובנה ירשלים (and you will rebuild Jerusalem) You are not allowed to grow trees in ירשלים?