98-105 days maturity. Rudbeckia fulgida var. sullivantii. Rudbeckia Goldsturm Seeds. Non-GMO, Perennial. Ornamental. Goldsturm rudbeckia seeds promise an award-winning European twist to a classic American bloom. Goldsturm seeds grow robust 1-3 foot tall rudbeckias brimming with dazzling 3-inch blooms of golden yellow petals around a coned chocolate center. Rudbeckia Goldsturm is a German hybrid crossed with the traditional American Black-Eyed Susan and recipient of the "Award of Garden Merit", by the Royal Horticultural Society and named "Plant of the Year" by the Perennial Plant Association. Goldsturm rudbeckia seeds are an ideal plant to grow around the flower bed for season-long color and will keep bees and butterflies around all summer.