Some and some. Whatever you've got that blooms at the same time, try. I use a small craft paint brush to good advantage with my aloe. It's interesting what will set
seed and what will not. Keep records. In any cross, the
seed patent goes first; if your astro. and gymno. work, and the astro sets
seed, the
seeds are astro x gymno. If the gymno sets
seeds, its
seeds are gymno x astro. Lots of cacti are self fertile, so you have to watch out for that. Aloe are not self fertile, so I know when I've got a cross. By extreme care, indoors with no polinating insects, I've gotten a rebutia/echinocereus cross in both directions. The
plants areless than 1/4 inch at the moment... Certainly the parents don't have to be of the same species, perhaps and perhaps not the same genus. Tell us what happens!!!
