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Astilbe Perennial Shrub Diseases

Astilbe Perennial Shrub Diseases:


Flower Failure:

Symptoms - Plants do not flower but otherwise appear healthy.

Management - Divide and replant to alleviate overcrowding.

Foliar Nematode:

Symptoms - Brown areas on the leaf are restricted in shape by leaf veins. These angular spots are usually seen on the lower leaves.

Management - Remove the leaves showing symptoms. Thin dense clumps to improve air circulation and irrigate in a manner that keeps water off the foliage


Leaf Scorch:

Symptoms - Margins of leaves turn red to reddish-brown.

Management - Move the plants to a shady, moist location. Note that leafhopper feeding can also cause leaf tips to redden and brown.


Leaf Spot:

Symptoms - Well defined dead spots form on leaves. Under ideal conditions of wet weather, spots merge and result in large dead areas on the leaf.

Management - Apply PureSpray Green to entire plant to help prevent and control leaf spot. Buy PureSpray Green Now!


Powdery Mildew:

Symptoms - White fungal growth develops on the upper surface of leaves.

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



Root Knot Nematode:

Symptoms - Galls form on roots and plants may be stunted.

Management - Remove infected plants. Cultivate the area to remove all plants and leave the soil bare for a growing season



Symptoms - Plants are yellowed but roots appear healthy.

Management - Remove infected plants.



Symptoms - Plants are stunted or wilted and have brown sunken dead areas on the stem near the soil line.

Management - Remove infected plants.

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