What can I spray my camellia with?
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Camellias and other tea scale-infested plants should be treated with oil in this time frame. Spray the entire plant, top to bottom, including the underside of the leaves, with neem oil or horticultural oil. Systemic insecticide products also work well at this stage and control crawlers as well as adult scale insects.
How do you treat camellia blight?
The best bet is to remove and destroy all leaves, buds and petals from that have fallen to the ground. Be sure to follow up with a fresh layer of mulch, 2-3 inches thick. This helps create a barrier that will inhibit the spread of the spores that cause the fungus.
How do I get rid of aphids on my camellias?
First, try knocking the aphids off the camellia bush with a strong spray of water. Aphids are slow-moving insects that can’t make their way back onto the shrub once you knock them off. The water also helps rinse off the honeydew. If you can’t get control of the aphids with a jet of water, try insecticidal soap.
What causes holes in camellia leaves?
At least two different types of leaf beetles are known to feed on and injure camellias. These beetles, Rhabdopterus deceptor and R. proetextrus, feed at night and hide in the mulch during the daytime. Their feeding results in curved elongated holes in the foliage.
What insect eats camellia leaves?
Beetles on camellias are the likely culprit, but controlling camellia weevils can be difficult to achieve since the pests feed mostly at night. If your camellia plant has holes, it is most likely the result of the camellia vine weevil or cranberry rootworm beetle.
What is horticultural oil used for?
Horticultural oils are pesticides that control insects, mites and some plant diseases. They are specifically designed to control plant pests. Commercially available horticultural oils are highly refined petroleum products that are filtered and distilled to remove compounds that can harm plants.
Is horticultural oil the same as neem oil?
One major difference between neem oil and horticultural oil is the toxicity of neem oil toward some insects. Horticultural oil is not toxic on its own. It relies on suffocating insects for control. Remember, just like many organic pest control chemicals, neem oil is nondiscriminatory in what it kills.
Do camellias like vinegar?
As you noted, camellias prefer acidic soil. Along with azaleas and rhododendrons, camellias can’t deal with soap build-up. Adding vinegar won’t balance out the pH. Instead of grey water, look for other water sources, such as the shower bucket.
What does camellia petal blight look like?
Infection by the Ciborinia camelliae fungus initially causes small, brown, irregularly shaped blotches in petals. Spots enlarge rapidly until the entire flower is brown and dead. Except when wet, blighted petals are dry or leathery but do not crumble when handled.