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Fungus on Pines (1 Replies)

Posted July 2, 2015 at 9:06 pm

Fungus Problems – Diplodia Tip Blight; Dolhistroma
I have tip dieback issues on the following:
Pinus Mugo Sherwood Compact
Pinus Longaeva Sherwood Compact
Pinus Cembra Pygmy
Pinus Nigra Hornibrook

I brought samples of the problems to our county extension agency. The ladies tell me the pinus have diplodia tip blight and also dolhistroma(sp?). I am looking for a fungicide for these problems. The agency is not allowed to give me chemical names, so I am hoping you folks can help. If anyone has these pine problems and found a fungicide that can help, please let me know.

I understand from the agency that the fungicide is first applied at bud break and a few times thereafter. Is this correct? Also, will I be able to plant a pine in the same place in the future?

Thank you for your help.
Beverly Masaitis
Neshanic Station, NJ

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Posted July 3, 2015 at 12:01 pm

He Bev,
you’ve got quite the little spate of various scourges going on right no. I feel your pain. Your agency has given you the proper instructions on how to go after a cure, implying that it’s probably too late to do anything right now. I highly recommend raking up and disposing of any and all organic matter from underneath your trees. That’s where the spores are gathered, ready to attack for next year.
I’ve attached a link to a discussion on these fungal blights that recommend some of the available products available to combat them. Good luck.


Iowa state university study

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