Replanting in Flower Bed in Which Zinnias Acquired Fungal Infection

Martie added on February 25, 2018 | Answered

Hi! I appreciate your website so much--thank you!! I had a lovely bed of dwarf zinnias last summer that developed a fungal infection (alternaria?) and finished off the plants in a short timein late summer. I understand that planting too close, and overhead watering/rain causes moisture to stay on leaves, hindering air circulation, thus causing the infection. Watering at ground level is ideal, but rain is a given. Am I assuming that the fungus is still in the soil in this bed? E.g. would I be ill advised to plant zinnias again in that bed this summer, or should I choose another annual?

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.
Certified GKH Gardening Expert
Answered on February 25, 2018

I would choose something else. You can apply dolomitic lime and wettable sulfur to the soil to kill anything off, but sometimes this vigorous disease will not be killed. It is best to choose something unrelated to plant in its place.

Was this answer useful?
Looking for more?
Here are more questions about Zinnias

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

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