I have a Dhalia (Langstaff) in a pot. Now all the leaves are covered in a dusty thing....fungus? Is it normal for Dhalias to have this problem? Anyway to prevent it?
Dhalia
Sep 06, 2004
6 Replies
Powdery mildew. Not much you can do now about it. A fungicide next year when the leaves emerge. Try Organicide next year.
Tom
Thanks Tom. Should i cut it now or wait until the first frost? (It looks awful...)
Thanks again
Dhalia and Greggia?
Do you mean Dahlia?
Not a good plant to grow in pots because of the tuberous roots. If the leaves have mildew its because the plants have been kept too wet in a humid atmosphere. Give them moving air.
Greggia? The plant is in the balcony, a lot of wind there...but we are having a very humid summer. I have to keep it well watered or the leaves look wilted. At the beginning of the summer looks beatiful...but not anymore
You can do either but don't compost the infected leaves.
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