Rose Diseases and Pests
Don't let rose diseases and pests spoil YOUR beautiful rose garden! Roses can be bothered by a number of different diseases and a host of insect problems! Mother nature, and your own particular climate can be to blame for most of them. When starting your garden, choose plants wisely! Try to grow ones that are less susceptible to these problems. Plant ones that resist some of the common rose problems such as black spot and powdery mildew. Keep your plants healthy! They will be less susceptible to insect attacks and diseases.
For information on caring for rose bushes keep reading... Fungal ProblemsBlack Spot
Extremely common fungal disease. Most roses will have at least a little black spot by late summer. This disease infects the foliage with black rounded spots with feathered margarins. When it becomes severly infected, the leaves turn yellow and drop off. A rainy day or wet foliage overnight allows infection to start. Although it can occur in any region, it is most typical in regions with higher rainfall. To keep your roses totally free of this fungal, you would have to be on a regular fungicidal spray schedule. It would be wise to choose roses that had excellent resistance to black spot. Remove infected leaves to another part of the garden to keep from spreading the infection. Spores overwinter on fallen leaves and infected stems. Avoid watering from above. The splashing water will spread the disease to neighboring plants. Learn more about Black Spot and cures for it
For an organic cure to
rose diseases such as Black Spot- Follow this link.
Botrytis BlightThis Fungal Disease is also called Gray Mold. It destroys the flower buds, causing them to turn black. The best solution to this problem is prevention. Prevent
Botrytis Blight before it ruins your roses
Crown GallCrown gall appears as a large corky growth at the base of the plant,and on stems and roots. It can be as big as several inches in diameter. They will weaken the plant and cause yellow leaves. Whole branches could die back. Read more about
Crown gall.
Downy MildewRose diseases in the form of a fungal that causes the foliage to develop dark, angular, purple to reddish color irregular spots or blotches.Also causes gray, fuzzy growth on the underside of the leaves. Infected leaves may turn yellow and drop off quickly. Severe case of this fungus will weaken the rose. Cool temperatures and high humidity is usually the cause. Spray with a fungicide every 7-10 days for prevention. Remove and discard any infected leaves. An Easy Cure for Downy Mildew RustRust appears as bright orange spore masses on the undersides of rose leaves. On the top side of the leaf,you will most often see a yellowish spot. If the plant is severly infected, the leave may twist, curl, turn brown, and fall off.These rust spores overwinter on fallen leaves. The bush becomes less vigorous, and the plant becomes more prone to winterkill. Rose diseases like this occur most often in cooler temperatures and require wet conditions to infect foliage. Powdery MildewThis commom rose disease appears as powdery white or light gray patches on the leaves. Severe infections can cause young leaves to twist and become distorted. Powdery Mildew do not need wet foliage to develop. It is more common on roses that are shaded to much. Although many of your flower plants can be affected by powdery mildew (Phlox,Lilacs,Zinna) this is not the same fungus that effects your roses. Each is a plant-specific species of this fungus!
Shield-All IITM Broad Spectrum Fungicide More Rose DiseasesStem CankerBrown, reddish or yellow sunken areas on the cane. They may be cracked or have a purple margin.Usually noticed in the Spring during pruning time. The lower part of the cane is green and healthy, while the top is brown, black or purple. Fungi enters the plant at a wound in the cane, usually during wet or humid weather.
Cut off and dispose of the cankered canes.
Learn more about stem canker and what to do.
Help to avoid rose diseases. Make Spraying your roses, a breeze! Learn the secrects of the Pro's! Follow this
"Guide to Perfect Roses"
Perfect GardenTM Spray Kit for Roses Insect Problems
Caring for rose bushes includes "Knowing Your Enemy" If you see an insect, you should identify it before attacking it! It could be just a harmless bystander, or it could be a benefical bug! The majority of the bugs in your garden ARE beneficial. The (GOOD BUGS) prey on damaging insects , which is in turn helpful in reducing the pest population. Lady bugs for example, the adults and their larve, feed on aphids. Praying mantis,
Green Lacewings I don't like using chemical sprays in my garden, because of the potential harm to the beneficial insects. A heavy stream of water, insecticidal soap,or neem oil is usually prety effective to control a wide range of insects. Gardens Alive Pyola spray is a wonderful organic spray that will eliminate lots of insects!
Aphids
Aphids (or) plant lice, are tiny but visible green insects that form colonies or clusters along the flower buds and the stems. Appearing in mid to late spring, they multiply rapidly,appearing in large numbers. They suck the vital juices from the rose, as they excrete a sticky substance called honeydew. Lady bugs, if present in the garden will eat them, but if you have serious infestations, spray the plant with a strong stream of water from your garden hose, once or twice a day. You could also treat with insecticidal soap.
Rose SlugsDo the leaves of your rose plants look like they're being eaten? Is something skeletonizing them, leaving behind only the veins. The culprit is a small caterpillar called a Rose slug. Find out how to keep them out of your garden.Borers
The borers tunnel into the cane, hollowing it out and killing the shoot. If you slice open the cane, you will see white/yellowish worms that are up to 3/4 inches long. Cut and dispose of the infested rose stem. Cut several inches below the point where the stem is swollen.
ThripsThese tiny insects suck the juices out of the flowers, damaging rosebuds, flowers, and foliage, especially new growth. Damaged buds will turn brown and fail to open. It can be hard to treat these hiding thrips. your best defense is this Safe Organic Spray Learn more about Thrips on your roses.Japanese Beetles
Dark green and copper colored beetle can be very destructive! They often skelitize the leaves and do major damage to flowers and buds.
In my area, they usually appear late June/ early July. You can hand pick them, dropping them in a plastic bucket of soapy water, if you only have a few, but for a more effective, and much easier way. Check out this Environmentally Responsible Spray
that will kill them, without harming the "good bugs' of the garden.
Leaf cutter Bees
Do the leaves on your rose plants have small precise ovals or circles cut out of them? Are you wondering what is making these bites, and what to do about it? The culprit is
the Leafcutter Bee
Rose BeetlesRose Beetles come in many colors. They chew holes in flowers and leaves, and can seriously destroy the blooms. Buds fail to open, or open deformed. Find more information and an
easy fix to be rid of these garden pests
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