Q.powder on jane magnolia leaves
I live in Maryville, TN. and there was a lot of rain this summer. Most of the leaves have fallen off. There is a powder residue on the leaves but looks like new growth is growing.

Nikki
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on November 1, 2013
The powdery residue is from a fungal issue called powdery mildew. You can try treating the tree with neem oil, often sold as fruit tree spray in some places. Here is more information: https://www.gardeningknowhow.com/plant-problems/disease/get-the-cure-for-powdery-mildew.htm
https://www.gardeningknowhow.com/problems/pests/neem-oil-uses.htm
Was this answer useful?
00