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Questions, Answers and Comments by Category
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Initial post
19 MAR 03 by
Susan
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I try to seal my canes when I prune and deadhead my roses; but, occasionally, worm borers get in the cane. What spray is it I need to get to spray my roses for this? I had some several years ago and can't remember what it was? I sprayed it on at the start of the season and wasn't bothered by the borers the rest of the season.
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REPLY
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Rather than a synthetic chemical solution, you might consider applying beneficial nematodes to your gardens once a year. For about $20 (US) you can purchase enough to cover 2000 - 3000 sq. ft. They continue to kill insects all year, reproducing again and again.
Besides killing all stem borers, they also kill thrips, cucumber beetles, grubs and over 250 other bad bugs. We have been applying beneficial nematodes to our gardens for six years now and have never seen stem borers.
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Reply
#2 of 5 posted
27 MAY 05 by
Terre
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Which nematodes do you apply, are there specific one for specific pests? How are they applied?
Thanks, Terre A.
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Good question. There are different types. We have been using sub-strains of Steinernematidae and Heterorhabditatid families. These are bundled together in a single package to provide diversity with one application.
Ask your supplier for a list of the specific pests the Nematode speciies they sell will control.
Any good organic nursery should carry beneficial nematodes. You could mail order them, but the freight (they need to be overnighted in an insulated cool pack) is normally more than the bugs.
Nematodes are typically applied using a hose-end sprayer. The water is simply a dispersal agent to deliver them to the root zone.
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#5 of 5 posted
1 JUN 05 by
Terre
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Thank you so much for this reply! This is exactly the kind of expert information I come to this site to find! I was unaware of the nematode solution before now and am very rewarded by this education.
Sincerely,
Terre Ashmore
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Roses which do not have sufficient foliage are susceptible to sunburn. This weakens the plant's resistance to boring insects. You may want to take a look at which cultivars which do not have enough foliage to protect the canes and cut out the infected portions of the plant and remove the insects from your garden.
Good luck with your roses.
Smiles,
Lyn
helpmefind.com
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