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Borers in peach trees
I got borers in my peach trees. What insecticide to I treat this with?
Steve |
#2
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Borers in peach trees
Steve B wrote:
I got borers in my peach trees. What insecticide to I treat this with? Steve Try poking a bit of fine stiff wire down the hole and wiggling it about. D |
#3
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Borers in peach trees
On 11/2/12 3:34 PM, David Hare-Scott wrote:
Steve B wrote: I got borers in my peach trees. What insecticide to I treat this with? Steve Try poking a bit of fine stiff wire down the hole and wiggling it about. D Flat-head bark borers can kill major limbs or even the whole tree. Since they carve out broad areas under the bark, there is no narrow hole where a wire will suffice to kill them. The classic treatment is a preventive spraying of lindane just after the flower petals fall. This is supposed to be sprayed on all mature branches, the trunk, and the soil within about 6 inches of the trunk. However, lindane is an organochlorine chemical; and its use for agriculture and home gardens is now prohibited in the U.S. and a number of other nations. This coming spring, I plan to use an imidacloprid drench on my peach tree. This systemic is definitely NOT approved for use on edibles; however, the research that I have seen says that it is harmless to birds and mammals, including humans. It is very harmful to honeybees, which is why I will wait until after the peach flowers lose their petals. One treatment should last 12 months, but I expect the effects on bees will be minimal when the peach flowers again in a year. -- David E. Ross Climate: California Mediterranean, see http://www.rossde.com/garden/climate.html Gardening diary at http://www.rossde.com/garden/diary |
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