Rudbeckia No Flowers. Rudbeckia hirta Cherokee Sunset. Rudbeckia hirta Indian Summer.
25122019 Rudbeckia fulgida var. Deamii is a clump-forming erect perennial boasting masses of rich golden yellow flowers 3 in. Verticillium wilt a fungal disease is often fatal to rudbeckia plants.
Hirta right are paler in color more narrow less toothy and leaves and stems are hairy.
27032015 While it may be difficult to tell the rudbeckia species apart by their flowers the form of the leaves is different. Rudbeckia can be affected by aphids slugs and snails and occasionally affected by powdery mildew or rust plant disease. Rudbeckia have daisy-like flowers that provide a blaze of colour in late summer. Across 2-5 cm from mid summer to frost no matter what the weather is like.