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05-23-2007, 08:42 AM | #1 |
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Hemlock Disease
We have at least 8 hemlocks that are losing their needles and becoming pretty scraggly.There seems to be no pattern because they are scattered among other healthy trees.We hate to lose them as they are all nice,full grown shade trees. I don't know whether to call a forester or a tree company? Any ideas?
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05-23-2007, 09:10 AM | #2 |
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It might be worth contacting your County Extension Forester affiliated with the UNH Cooperative Extension. They all have e-mail, so you can probably get a pretty quick response.
http://extension.unh.edu/Forestry/Forestry.htm A concern might be whether your trees are suffering from the Hemlock Wooly Adelgid. As of '04, there haven't been any sightings of the pest in Belknap or Carrol counties around the lake, but it has been found in Merrimack, Hillsboro, Cheshire, and Rockingham counties. Probably only a matter of time before the Winnipesaukee area is affected. I haven't seen the pest in the Gilford area, but I haven't really been looking that hard. |
05-23-2007, 10:06 AM | #3 | |
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Wooly Adelgid insect
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There are hundreds of sites and all say that they can do lots of damage. Hope they aren't what you have as I really do not want to see them coming to our beautiful wood lands. Meaning the North East/New England.
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05-23-2007, 11:32 AM | #4 |
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don't freak out just yet!
Quite possible it's just your normal winter dessication especially if they are located in a windy area during the really cold hard winds of the winter. Suggest giving it a google with "hemlock winter dessication"- lots of stuff there - pictures, studies etc...
I know some of mine show some each spring especially along field edges where they really get nailed with harsh, cold winds. |
05-23-2007, 12:33 PM | #5 | |
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05-23-2007, 06:25 PM | #6 |
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Sam-I seem to recall hearing Paul Parent say that the hemlock disease does not strike all trees, it can hit two together then skip one etc. He has a call in show on the radio on Sunday morning and is very knowledgeable.
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05-23-2007, 07:30 PM | #7 |
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Thanks for all the tips.I followed through with UNH and the county forester.Always get answers on the forum.
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05-24-2007, 07:45 PM | #8 |
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Wooly Adelgid
I recently came across an article on this. Seems that the Wooly Adelgid has done significant damage to the forests in Connecticut. Massachusetts has long been presumed to be protected from the Wooly Adelgid due to its colder winters. However, scientists believe that climate change leading to warmer winters will put all of the Hemlocks in Mass at risk. The article didnt mention New Hampshire. I think winters around the lake are still cold enough to offer some protection....for the time being. Lets hope so.
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05-25-2007, 05:13 AM | #9 | |
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They're WEEDS, Jim...
(Apologies to Star Trek).
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As stated, they seem prone to die-offs selectively, leaving many healthy hemlocks between the dying ones. I've left two dead hemlocks standing to encourage visits by Pileated Woodpeckers—as close to an Ivorybill as New Hampshire's going to get. (And had a tiny Downy Woodpecker visit just yesterday). While hemlocks will make quick privacy hedges in just a few years (and I transplanted a bunch last summer for that very reason), hemlock needles do nothing to deter runoff and are readily washed or blown into the lake. Even huge sugar maples won't shade-out hemlocks, but hemlocks will kill off everything underneath them—except other hemlocks. One good reason to cut down any dead/dying hemlocks would be to plant a few white pines (to guarantee one successful pine). IMHO, white pines are what had kept Lake Winnipesaukee clear of silt and other runoff products, but they need ample sun to get going.
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