Preventive fungicide sprays are effective, but the better remedy is to plant rudbeckia in open, breezy locations and to make sure that all fallen leaves and stalks are removed at the end of the ...

Here's a perennial sure to draw comments from even strangers. Rudbeckia 'Herbstonne' grows almost 8 feet tall and 4 feet wide. It has large, sharply lobed leaves and yellow coneflowers atop ...

Rudbeckia flowers that mutate, ... which is a soil-borne fungal disease that's often fatal to rudbeckia plants. ... (which produces an obvious whitish cast on the leaves). ...

Abundance seems too mild a word for the crowd of flowers on Rudbeckia fulgida var. sullivantii 'Goldsturm,' the black-eyed Susan that was named and chosen for the . The sturdy, 2-by-2-foot plant ...

Another popular rudbeckia species is the Gloriosa Daisy. This biennial, or short-lived perennial, plant is native to North America and has been used in gardens and landscapes since the 1800s.

This rudbeckia was the Perennial Plant of the Year in 1999. WHAT: Rudbeckia fulgida Goldsturm, also known as Goldsturm coneflower, is a native North American perennial.

Someone gave the Rudbeckia growth hormones. Or so it seems when you see Rudbeckia 'Autumn Sun,' a perennial that grows up to 5 feet high -- yet stays dramatically thin. We are by now quite ...