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Preserve ladybugs AND kill black spot?
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Posted by missleslieann (My Page) on Mon, Apr 12, 04 at 10:19
| Is it possible to protect ladybugs and at the same time kill black spot? All my rose bushes have blackspot here at my new house. |
Follow-Up Postings:
RE: Preserve ladybugs AND kill black spot?
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| Yank the roses with black spot and grow ones that aren't succeptible to it or use commercial fungicides which don't kill insects. You don't have any notation on your page about your location, but there are no spray roses for every climate, including the humid South. They just won't be hybrid tea "florist's roses" and they won't be available at your local garden center. It may be a little more work to seek them out, but if not spraying is really important to you, it's what you do. |
RE: Preserve ladybugs AND kill black spot?
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| Your dilemma is easily solved. Spray with the Cornell formula but, just before you spray each rose, take the water hose and spray it violently. This will run most of the ladybugs away temporarily. I do it this way routinely and don't seem to have hurt the ladybug population at all. |
RE: Preserve ladybugs AND kill black spot?
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- Posted by hag49 Tx z8a (My Page) on
Wed, Apr 14, 04 at 21:46
Field, can you define what the Cornell formula is? I have BS on some of my antique roses but right now my ht's are spectacular.. go figure.. I'm down here in China Spring just south of you..
thanks, Hilary |
RE: Preserve ladybugs AND kill black spot?
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Are the pesky lady bugs that are terrozing me in my house any good in the garden. They are the Asian beetles that have been plaguing me now for about 3 years. All I seem to do is release them out of the house, and vacuum them...anyone else would have sprayed an insecticide years ago, but I hate using chemicals.
Do they really contribute to the garden? They don't seem to
smvd |
RE: Preserve ladybugs AND kill black spot?
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| The basic Cornell formula is two Tbsp of horticultural oil (usually Sunspray brand in our area) and one heaping Tbsp or four Tsp of ordinary baking soda (sodium bicarbonate) mixed thoroughly in one gallon of water. Water the roses well and then spray late in the day when they are out of the sun. |
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