Polka

Polka's paperwork is thinner than its fame. The RHS registers it as Polka NL, confirming Netherlands origin, but the hybridizer and registration year are unverified in our sources; Triple Wren notes it first appeared in shows around 2000. What has carried it since is the face. The thin red picotee edge on pale petals around a yellow pincushion makes it look hand drawn, and anemone dahlias photograph like nothing else in a bouquet. Triple Wren has sold it out, and it tends to vanish from small farm shops early in tuber season. There is no drama in its story, no sport, no name dispute, just a flower that looks like its name sounds and sells accordingly.

Polka is an anemone form dahlia growing to about 36 inches, compact enough to get by with light staking in sheltered spots, though a single stake never hurts. Blooms run 4 to 5 inches with a pincushion center that changes as it matures, brilliant yellow ageing toward pink and rose, so a single plant gives a range of looks across the season. The honest limit is the vase. Triple Wren puts vase life at 3 to 4 days and calls it an event flower, so cut it for the wedding, not the market stand. Open centered forms also draw pollinators heavily. Pinch at 8 to 12 inches, deadhead often, and lift tubers in cold zones. It suits event designers who want whimsy and texture, and garden growers who want bees, and it will disappoint anyone judging dahlias by longevity alone.