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Soil Problems

Q.What Causes The Extensive “brown-out” Of Foliage?

Zone 10509 | Anonymous added on August 31, 2021 | Answered

By mid July, the foliage on my cosmos (starting at the bottom and moving upward) becomes dark brown looking dead and water deprived…..like drooping brown lace. I’ve tried a variety of irrigation techniques, times and volume of water but nothing seems to work.

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Certified GKH Gardening Expert
Answered on September 14, 2021

These flowers prefer dry, hot soil. Wet soils cause infections, which is likely the case here.

I would treat the area with a fungicide, and replant. This article will help you with fungicide use:


This article will help you to know what care these plants require:


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