Are nanking cherries from seed different enough?

For pollination purposes that is. I’m thinking about picking two plants that a local backyard grower propagates from seed.

I had read that two different seedlings would be good enough, but not sure how reliable that was…and I don’t have direct experience. I mostly can’t get mine to escape the late spring freezes!

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for almost all plants siblings can pollinate each other. Even if they came from the same mother/father combination.

The exceptions are when there is a certain gene/allele causing self infertility. Like the case with sweet cherries.

as far as I’m aware, nanking cherries have no such thing.