Was doing some reading and saw this pic of a tree with dutch elm disease that had to be cut down. So sad...darn disease and darn beetles.
- pulling back the bark and cleaning the crud off the trees, you can see the beetle trails!
I hate that....Elm trees are beautiful and make great shade.
Eww! Interesting tho! Sad!
"Those that throw mud, lose ground!" :>)
there was lots of that in the Denver area. Also pine beetles kills lots of trees in the forests. So sad
A friend of ours told us about that after visiting CO a coupla years ago. What's with these beetles anyway?
The pine beetles are an issue in CO. Large areas of beetle kill creates dry timber for future fires.
Check site below for a complete description of what happens with the beetle larva and the fungi they carry with them that infects the trees. 30 below winter temps for 5 days in a row is a great control btw.
Thanks for the photos. I've always wondered what it looks like inside a diseased tree.
Hey conrad, want us to send ya some of that 30 below winter temps for 5 days???
Joy37, glad to be of service.
SURE! If it kills off the pine bark larva!
I really do LOVE Winter!
Was surprised to read that -30 temp. will kill pine bark beetle as they are a problem in northern MN and it is always at least that cold here. So I did some reading. CO has the mountain pine bark beetle that can not stand the cold. There is also an eastern pine bark beetle which can tolerate the cold.
And that is probably more than you want to know about the pine bark beetle.
Did not know that about the different beetles.
I did read where the severe cold does not have to be as extreme, nor last as long, if it is in the fall or early spring. The beetle/larva either don't have enough glycol in their system yet or have come out of "hibernation" and start feeding early and are more susceptible to freezing under the bark.
They also carry a fungus deep into the tree (while boring) that also is detrimental to the life of the tree. The blue wood color of the beetle kill pine used to cause the lumber to cost more. Now it tends to be more the norm than a rarity.
From what I read the DNR recommends a sacrificial tree. Cut one down near the infestation and in the spring they all attack the downed tree first and lay their eggs. Then the tree is destroyed before they hatch. Thought that was interesting.
Forgot to add, I read the mountain pine bark battle is moving eastward but so far the range of the eastern and the mountain are still separate.This message has been edited. Last edited by: metwo,
Wow, we've learned so much since I posted those pics!!!
Metro, so does that mean the mountain pine beetle becomes the "eastern pine beetle " when it moves East?
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