Phlox turning brown and dying - Ask Extension
Hi. All my phlox has yellow discoloration in big patches that start on the edges of the leaves and move inward. One by one the plants are turning comp...
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Phlox turning brown and dying #648875
Asked June 10, 2020, 1:23 PM EDT
Hi. All my phlox has yellow discoloration in big patches that start on the edges of the leaves and move inward. One by one the plants are turning completely brown and shriveling Up and dying! I sprayed with an organic spray with spinosad-a but that didn’t work so I tried one that said “pesticide, miticide, fungicide”. No holes in the leaves. Pale yellow discoloration. Doesn’t look like an insect. Looks more diseased. Can anything be done?
Hennepin County Minnesota
Expert Response
Without knowing the specific products that you used, I cannot say if that is the cause. If you know the name of the products I could rule that out. Typical problems with phlox showing this kind of damage include the following: leaf drop, aster yellows, viruses. See the following websites to compare what you are seeing with particular diseases. At this stage the disease process looks too far advanced. Be careful not to plant new plants in the same soil.
1. http://apps.extension.umn.edu/garden/diagnose/plant/annualperennial/phlox/leavesdiscolored.html
2. http://apps.extension.umn.edu/garden/diagnose/plant/annualperennial/phlox/leavesspots.html
Can I call you. I am a young gardener and am feeling so discouraged.
I am not annonymous. I am Lucy.
If you wish to speak to a Master Gardener, call<personal data hidden>. A Master Gardener will return your call. You can also find lots of good gardening information on our website: https://extension.umn.edu/yard-and-garden. Check out the “How to” section.
