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The Goldsturm variety (pictured in the second image up top) is a great perennial rudbeckia to try. In 1999 the Perennial Plant Association voted it as the Perennial Plant of the Year. It likes full sun to partial shade and well-drained soil.

One place that sells this variety is White Flower Farm. Another place to check out is called American Meadows. Do a search online and you will find the online catalogs for each company.

Thank you for your question.

-- Contributed by: Kathleen Roberts

I am interested in planting a dwarf species of rudbeckia for a formal front garden. However, which are "true annuals" and which are "true perrenials"? I am only interested in perrenial species that grow anywhere from 10"-18" in height and what is their typical longevity? Thanks!

-- Contributed by: Tom Graham

Brian, it is hard to say without seeing the plants. However, downy mildew gives a gray appearance and can be controlled with a fungicide. You may want to contact your local extension office and have an agent take a look.

Anne, could it possibly be Rudbeckia maximus? They have gray-green leaves and bloom July through August. Again, it is hard to say without seeing the plant. You may also consider a phone call to your local extension agent.

If anyone else has an idea of what Anne's flower is called, feel free to post your comments! :)

Thanks for your questions.

-- Contributed by: Kathleen Roberts

I am having a problem with my blackeyed susans. They bloom each spring ,and last perhaps 2 months , then they turngrey and die. The dying is sporatick, only some plabts die. I have sprayed them with ORTHO. no use please help .

-- Contributed by: brian power-waters

Need to know if anyone knows the name (common but especially Latin) of the giant rudbeckia that has the leaf which looks like a giant rag plant? The height reaches 6-10' when moisture is available and is now in bloom. (July until September)

Please help all who is knowledgeable in this field. Thank you a head of time.

-- Contributed by: Anne M. Ross
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