91-105 days maturity. Rudbeckia occidentalis. Rudbeckia Green Wizard Seeds. Non-GMO, Perennial. Ornamental. Green Wizard rudbeckia seeds grow one of the summer's most unique and exclusive blooms boasting 3-5 inch black 'rayless' coneflowers. Green Wizard seeds are an exciting and fascinating substitute in the flower bed for the traditional golden yellow rudbeckia. Green Wizard rudbeckia is native to the wet, high mountainous regions of the American west and is a vigorous performer in cool, moist, yet sunny gardens.