[CANUFNET] aphid infestation in Basswood

[Brad Gurr]

Dave, 

Imidacloprid is effective but overuse can result in explosive mite populations.
 Every second ot third year seems effective. Make sure it is licensed and labeled for your area.

Brad Gurr  " Dedicated to the Care and Preservation of Trees"

--- On Fri, 10/2/09, Bartram Woodlands <bartramwoodlands at sympatico.ca> wrote:

From: Bartram Woodlands <bartramwoodlands at sympatico.ca>
Subject: [CANUFNET] aphid infestation in Basswood
To: "Canadian Urban Forest Network" <canufnet at list.web.net>
Date: Friday, October 2, 2009, 2:05 AM

Um, I have a client with a 70' Little leaf Linden in Backyard, covered in soot from heavy aphid infestation throughout this year and dates back to late summer last year.

Tree is dripping honeydew on nieghbouring property and all plants/shrubs in garden now sooty. How do you spray a 70' tree repeatedly to remove aphids?  Do oil sprays work in spring? Aphids are now gone, likely in bark I presume. Would imidacloprid be effective. Guelph has banned cosmetic pesticide use.
Tree although healthy seeming is boxed in by other trees and heavily limbed. Plan to prune lower/ small limb to increase light through lower canopy.

Any assitance appreciated - Thanks ,

Dave Bartram




      
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