Mugo pine needle loss - Ask Extension
I have a mugo pine that is infested and treated for pinesaw flies nearly every spring. However, this past winter, a large portion of the middle of th...
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Mugo pine needle loss #830890
Asked May 19, 2023, 11:19 AM EDT
I have a mugo pine that is infested and treated for pinesaw flies nearly every spring. However, this past winter, a large portion of the middle of the mugo pine lost its needles (similar to pinesaw fly devastation, but in the middle of winter). Any ideas on what happened? What can I do to treat it? Do i need to cut out the affected portion? Will the mugo pine rebound? Thanks in advance for any help/advice you can provide.
Hennepin County Minnesota
Expert Response
Thank you for writing.
I need a couple more pictures.
a close up of a dead branch at the place near the bottom where the death started.
a close up of a not completely dead candle so I can see how the needles are dying.
Thank you.
I need a couple more pictures.
a close up of a dead branch at the place near the bottom where the death started.
a close up of a not completely dead candle so I can see how the needles are dying.
Thank you.
Hope these help. If they’re not what you need, let me know. Thanks for your help!
Sent from my iPhone
Sent from my iPhone
On May 19, 2023, at 10:37 AM, Ask Extension <<personal data hidden>> wrote:
Thank you for writing back.
The pictures are a bit blurred but in the center one, I think I see the signs of Dothistroma needle blight
https://extension.umn.edu/plant-diseases/dothistroma-needle-blight
The link has a lot of suggestions. For now, it appears that your evergreens are too crowded; the smaller one in front needs air.
I would cut away the entire dead part, clean up under the plant, and hope for the best. The Plant Clinic could examine a sample of the plant if you wish for a fee.
The pictures are a bit blurred but in the center one, I think I see the signs of Dothistroma needle blight
https://extension.umn.edu/plant-diseases/dothistroma-needle-blight
The link has a lot of suggestions. For now, it appears that your evergreens are too crowded; the smaller one in front needs air.
I would cut away the entire dead part, clean up under the plant, and hope for the best. The Plant Clinic could examine a sample of the plant if you wish for a fee.
