Shalom! I would like to know some halachot about grafting: Is it allowed to graft trees from the same plant species (e.g. two apple trees)? Is it allowed to plant such a tree? Is it allowed to plant a grafted tree which contains two species (e.g. a quince and a pear)? Is it allowed to plant a tree that is in itself a mixture of two species (e.g. a plumcot, which is a hybrid from a plum x apricot)? Thank you!