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ispahan

Rudbeckia cross-pollination between species?

Hi all,

I have a potentially silly question but I need a serious answer, LOL! I have tried searching for the answer but I could not find anything satisfactory.

Do different species of Rudbeckia pollinate each other and form interspecific hybrids in subsequent generations? I would like to grow both R. triloba and R. hirta in my garden next year, but not if they will cross pollinate.

I understand that different strains of R. hirta can cross pollinate, but just not sure if R. hirta will form hybrids with other species as well.

Thank you in advance for any help,

Ispahan

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