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Viola Perennial Shrub Diseases - Symptoms & Control


 Viola Perennial Shrub Diseases:

 

Aster Yellows:

Symptoms - Leaves are yellowed and narrow rather than oval. An abnormally high number of shoots form.

Management - Remove infected plants. Control leafhoppers.

 

Bacterial Infection:

Symptoms - An abnormally high number of shoots form

Management - Remove infected plants. Apply ZeroTol Fungicide/Bactericide to all surrounding plants to prevent bacterial infection in the rest of the landscape. This easy to use spray is very cost effective. BUY NOW and eliminate any harmful bacteria in your landscape.


Black Root Rot:

Symptoms - Plants are yellowed, stunted and die.

Management - Try to maintain the soil pH below 6.2 where the violets are growing. Apply iprodione + thiophanate methyl or fludioxonil.

 

Crown Rot:

Symptoms - Dying plants have white fungal growth on stems at the soil line. Small, golden-tan, mustard-seed sized structures dot the white growth.

Management - Remove infected plants. Keep mulch away from the base of the plants.

 

Downy Mildew:

Symptoms - Leaves have purplish or yellowed areas.

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 - Small spots, on generally on lower leaves, enlarge and become dark purple to black, 1/4” or more in diameter with feathery margins. Leaves then yellow.

Management Apply PureSpray Green to help control and protect healthy plants from leaf spot.

 

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

 

Pythium Root Rot:

Symptoms - Plants wilt and die as lower stems and roots discolor and die.

Management - Remove infected plants. Apply mefenoxam or metalaxyl to protect healthy plants.


Rhizoctonia Stem Rot:

Symptoms -  Roots and stems brown as plants wilt and die.

Management -  Remove infected plants. iprodione, iprodione + thiophanate methyl, or fludioxonil to protect healthy plants.

 

Rust:

Symptoms - Pustules yellow-orange spores form on the underside of leaves. The upper side of the spot is yellow.

Management ZeroTol Fungicide is a ready to use spray that provides immediate disease control for rust on trees. BUY NOW

 

Scab:

Symptoms - White spots with purple edges form slightly swollen areas along petioles and leaf veins.

Management - Apply thiophanate methyl, chlorthalonil, mancozeb, or chlorthalonil + thiophanate methyl to protect leaves not yet infected.

 

 

 

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