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Trees, Shrubs and Conifers: Adelgids

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Forum: Trees, Shrubs and ConifersReplies: 1, Views: 24
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granitegneiss
Norridgewock, ME
(Zone 5a)

June 19, 2012
2:13 PM

Post #9171835

I have found what I believe are Adelgids on my larch tree (Larex decidua Pendula). The article I read suggests controlling with horticultural oil in the fall and winter. Is there anything I can do now? I have a lot of conifers and worry that it will spread.
snapple45
Holland, OH
(Zone 5b)

June 24, 2012
9:53 PM

Post #9179376

There are "summer" horticultural oils. Summer is a good time to treat adelgids when they are relatively unprotected.

http://www.ext.colostate.edu/pubs/insect/05569.html

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