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laura_in_cinti

Rudbeckia Help

15 years ago

I need some help in understanding rudbeckias. Last year I wintersowed several different named varieties (Prairie Sun, Irish Spring, Double Gold) and the plain ol' rud. hirta. I thought all black eye susans were annuals that reseeded themselves but when I did some cleaning up in my beds yesterday, there are green clumps of rud's that have survived this winter's ice and snow.

Anyone in zone 6 have any experience with these? Are they really biennial? perennial?

Thanks!!

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