The most common insects found on rosebushes are aphids which will literally suck the life out of the rosebush. Knock them off with a strong spray of water & use baby shampoo or Ivory dish detergent spray (because other products may be caustic and burn foliage). The recommended dilution rate is 1 oz. Ivory Dishwashing Liquid to 1 gallon of water.Spray during the morning when the temperatures are cooler to avoid foliage burn.
Antidote for Rose Aphid
1 orange peel, coarsely chopped
1 tbsp. baby shampoo or mild dish detergent
2 cups water
blend on high speed for 10-15 seconds. Strain into coffee filter, & pour liquid into handheld sprayer. Hose down bushes to knock off aphids. Then mist spray the plants.
Another method is to Mix 1 oz. of vegetable oil with 1 gallon of water and spray on the plants. Upon coming into contact with an insect the oil will coat and smother the insect. Use this method during cooler months as it may burn if sprayed too heavily during the summer.
Don't be afraid to use the vegetable oil & mild dish soap (or baby shampoo) together.
For most insects: Mix 2 tbsp vegetable oil, and 2 tbsp baby shampoo in 1 gallon of water & spray.
Lady bugs also help control aphids.
If the tips of your rose canes wilt, then you probably have cane borers. Look for a hole on the cane where the borer entered and cut back the cane until you find the culprit, and then squish it. Remove infected canes as soon as you notice a problem & cover the cut with vaseline to prevent diseases from entering the wound.
Rose Chafers are usually only a problem in areas with sandy soils. Control methods are similar to Japanese Beetles.Kill the chafer larvae using biological controls such as beneficial nematodes or a product called "milky spore." A new Neem-based product, Neem Seed Oil, is available that repels the chafers. Or, manually knock them off your roses into a jar filled with water and kill them. Or trap them with a specially designed Rose Chafer trap that uses a pheremone to attract them.
For Sawfly larvae, shake the plant and step on the worms as they fall on the ground. Also place wren houses around your rose garden.
To prevent slugs from doing damage, spread coffee grounds( in moderation) around base of bush. Use repellent mulches: Wormwood, prostrate rosemary, basil, rue, acacia bark, and oak leaves are disliked by snails and make good repellent mulches. Wormwood is also effective as a spray. Use barriers with scratchy material, hydrated lime, wood ash, sharp sand, crushed egg shells, or diatamaceous earth.
Don't forget to plant Marigolds & onions nearby because their smell repells slugs & snails, & deters harmful insects.
Hope this helps.
2007-06-06 02:37:36
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answer #1
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answered by ANGEL 7
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It's never a good idea to use sprays because you are afraid of getting something. Would you go to the doctor every week for an injection just because you feared you might get sick?
If you keep your rose happy, proper water, proper sun, proper soil nutrients and control weeds around them, then they probably won't get sick. Some insects might come by to nibble, afterall the plant is outside where insects rule. You can help keep your plant "clean" by washing it with plain water several times a week. Do this early in the day.
Aphids will be a problem, but they don't eat leaves. They cluster up around the bud and maybe the upper leaves a suck the juice from the bud and leaves. Water washes them off quite well. Actually I just squish them with my fingers, very satisfying.
Holes in leaves can be from several sources. If the insect is soft bodied use the soap mentioned elsewhere. If the insect is hard bodied, well then soap won't work, it just bathes the bug. You'll need something stronger, but you can still avoid the Ortho type products by going with an organic dust, maybe pyrethrum. Sevin and ther other insecticides are for when NOTHING else is working. Indescrimate use of the heavy duty chemicals allows the pests to become resistant to the chemicals all that more quickly.........as has been happening for many decades now.
Diseases can be a problem in certain areas. The mildews and black spot are best prevented. A horticultural oil over the leaves will prevent the disease from settling in. I'd probably wait to see if the problem is in your area before I'd start treating the plants. Fungicides are expensive and not much more helpful than the horticultural oil (which is not the same as dormant oil)
Relax, keep your roses properly watered, fertilized about every 8 weeks, stopping at least 2 months before winter's cold sets in....if you have winter cold.
2007-06-06 02:47:34
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answer #2
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answered by fluffernut 7
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There are a ton of sprays on the market for just this problem. You can get them at any home and garden store or even in big bix stores like WalMart and Sears.
I would recommend an Ortho product, as I have found that they tend to be most effective.
2007-06-06 02:10:32
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answer #3
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answered by Anonymous
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I would use Sevin Dust.
Also make sure to clean any debris from around the plant. If they are mulched leave some room between the mulch and stem of the plant.
2007-06-06 02:18:27
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answer #4
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answered by hell_ofa_girl 2
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Stay organic..Use a little liquid dish soap in a spray bottle, add water and just spray your roses. Sounds like aphids and they will quickly disappear along with any other insects
2007-06-06 02:28:37
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answer #5
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answered by bblonde29431 1
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Stop growing the plants, if you got nothing for the bugs to eat, then you got nothing to worry about.
2007-06-06 02:10:16
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answer #6
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answered by Anonymous
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you do observe that the lawn demands a few insects to outlive, there are well insects that care for plenty of the dangerous insects , you begin setting up trojan horse killers and your going to wipe out the well insects too. . . like bees,ladybugs,butterflies,and a few lawn spiders to not be bad however I simply learn a article approximately a few trojan horse killers that experience burnt up a complete species of honey bees and I am simply definite it wont quit there.
2016-09-05 23:30:16
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answer #7
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answered by ? 3
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Do snails eat your rose leaves?
2016-04-21 13:51:16
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answer #8
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answered by Belinda 1
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