Questions about avoiding cross pollination
I want to save more seeds next year and trying to learn to keep them pure. I figure things do not cross pollinate all around the Fabacea family, but I was wondering about across genus and varieties.
LetÂs say in the spring I plant some yard long beans (vigna unguiculala sesquipedalis), I should also be able to plant regular green beans letÂs say Kentucky wonder (Phaseolus Vulgaris) next to them without danger of cross pollination, right? Is this combination OK, since they are different genus?
Now what about within the same genus? Let say I want to plant any bean, for example purple pole beans (phaseolus vulgaris), should I not plant Phaseolus lunatus (lima beans) in the vicinity? or is this still OK? Will they interbreed?
I am also assuming chick peas (cicer arietinum) are OK to plant next to regular peas (Pisum sativum) without danger of cross pollination, is this right? But the different Pisum sativum like sugar snap peas, shelling peas and snow peas might interbreed?
Any information on this is much appreciated,