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Coreopsis Perennial Shrub Diseases - Symptoms & Control


 Coreopsis Perennial Shrub Diseases:


Aster Yellows:

Symptoms - This virus is moved from infected clematis and some weeds by nematodes. Remove infected plants

Management - Maintain good leafhopper control and eliminate nearby weeds that harbor aster yellows.

 

Bacterial Leaf Spot:

Symptoms - Irregular brown blotches and spots develop on leaves

Management - Water in a manner that keeps leaf surfaces dry and water when the leaves will dry quickly. Remove infected plants. Apply PureSpray Green to entire plant to help prevent and control leaf spot. Buy PureSpray Green Now!


Botrytis Blight:

Symptoms - Lower leaves die and become covered with white to gray, fluffy fungal growth that soon becomes a mass of gray spores.

Management - Water in a manner that keeps leaf surfaces and flowers dry and water when the plants will dry quickly. Apply copper sulfate, fludioxonil, or trifloxystrobin.

 

Crown Rot:

Symptoms - Plants wilt, brown, and die. White fungal growth webs at the base of the dying plant and become peppered with small, tan, round structures.

Management - Remove infected plants. Mulch in a manner that does not hold moisture close to the stems.

 

Downy Mildew:

Symptoms - Black spots form on the upper leaf surface and white felt-like growth covers the underside of the leaf.

Management -ZeroTol Fungicide/Bactericide is a very effective way to control any type of mildew on trees and ornamental shrubs. It is an ALL natural product that is safe for the environment. Buy Now

 

Fungal Leaf Spots:

Symptoms - Purple to tan spots develop on leaves.

Management - Water in a manner that keeps leaf surfaces dry and water when the leaves will dry quickly. Apply trifloxystrobin or fludioxonil.

 

Powdery Mildew:

Symptoms - White fuzzy growth develops on the upper side of the leaves.

Management - Apply PureSpray Green. An all organic spray that works great for controlling powdery mildew. ZeroTol Fungicide/Bactericide is a very effective way to control any type of mildew on trees and ornamental shrubs. It is an ALL natural product that is safe for the environment. Buy Now

 

Root Rot:

Symptoms - Plants yellow, wilt, collapse, and die.

Management - Apply trifloxystrobin or fludioxonil,


Rust:

Symptoms - Orange-yellow masses of spores form on the underside of leaves.

Management - Remove infected plants. Cut plants back to the soil line in the fall. ZeroTol Fungicide is a ready to use spray that provides immediate disease control for rust on trees. It leaves no chemical residue behind, which makes it the natural choice for use around pets and children.

 

Scab:

Symptoms - Leaves have a coating of gray to brown spores.

Management - Water in a manner that keeps leaf surfaces dry and water when the leaves will dry quickly.

 

Stem Rot:

Symptoms - Stems turn brown or tan and die as large portions of the plant collapse.

Management - Cut plants back to the soil line in the fall. Apply trifloxystrobin

 

Wilt:

Symptoms - Plants wilt, turn brown and die.

Management - Remove infected plants. This fungus survives in the soil for very long periods of time, even in the absence of susceptible plants. Do not plant susceptible varieties.

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