There are more than 57,000 registered cultivars of Dahlia in the International Register of Dahlia Names by RHS.
I am so loved around the world that 14 groups of me are now categorized since hundreds of years ago.
There are encyclopedias of me, and there is an official registry adding a hundred new cultivars annually.
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Dahlia (Dahlia spp.)
Filoli Gardens, Woodside, California
