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Gardening Know How Questions & Answers - https://questions.gardeningknowhow.comWhy are my sweet basil leaves turning black on the undersides? The new leaves are beautiful but as they grower larger, the leaf develops black underside, similar to mildew, but not on the tops. How can I fix this problem? What am I doing wrong, as new to growing in Florida.
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URL to article: https://questions.gardeningknowhow.com/why-are-my-sweet-basil-leaves-b/
URLs in this post:
[1] https://www.gardeningknowhow.com/problems/pests/neem-oil-uses.htm: https://www.gardeningknowhow.com/problems/pests/neem-oil-uses.htm
[2] https://www.gardeningknowhow.com/edible/herbs/basil/basil-diseases.htm: https://www.gardeningknowhow.com/edible/herbs/basil/basil-diseases.htm
[3] https://www.gardeningknowhow.com/edible/herbs/basil/how-to-grow-basil-plants.htm: https://www.gardeningknowhow.com/edible/herbs/basil/how-to-grow-basil-plants.htm
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1 Comment To "Sweet Basil Leaves Turning Black"
#1 Comment By Nikki On 04/18/2014 @ 4:24 pm
Sounds like a fungus, possible from too much moisture or even pests. Remove infected leaves and treat the plant with neem oil. Here is more information: https://www.gardeningknowhow.com/problems/pests/neem-oil-uses.htm [1], https://www.gardeningknowhow.com/edible/herbs/basil/basil-diseases.htm [2], https://www.gardeningknowhow.com/edible/herbs/basil/how-to-grow-basil-plants.htm [3]