Black Eyed Susans

Black Spots on My Rudbekia (Black Eyed Susan) Leaves

szhenry68 added on August 20, 2017 | Answered

I have a large flower bed with lots of black eyed susans. This year one particular section became covered with black spots which I now know are likely a fungus. Other Black eyed Susan plants at the other end of the garden do not have these spots. My question is if I transplant some of the plants that do have these spots on the leaves to another flower bed will they come back next summer with the same spots and if so can it spread to my healthy ones that dont have the spots. I woould really appreciate your advice. Thank you. Sandy

Share this Question:
Log in or sign up to help answer this question.
Check here if you would like to receive notifications every time this question is answered.
You are subscribed to receive notifications whenever this question is answered.
Answered on August 20, 2017

Transplanting infected plants will transplant the fungus or virus as well. There are several diseases of black-eyed susans that cause blackening leaves, both fungal and bacterial. One is devastating to the plant, others are more of a cosmetic issue. It is safer to divide a healthy plant this fall (or move one of the numerous seedlings if you let a healthy plant go to seed) than transplanting a diseased plant. Here is a thorough description of Rudbeckia diseases:

Was this answer useful?
Looking for more?
Here are more questions about Black Eyed Susans

You must be logged into your account to answer a question.

If you don't have an account sign up for an account now.