|
|
Shoestring Root Rot is so named because dark, shoestringlike strands cover the bark of roots of infected shrubs. In addition, large, white "fans" fungal mycelium develop between the bark and the hardwood of the crown and larger roots. The most obvious sign of root rot is the growth of mushrooms around the base of infected shrubs in late fall or early winter. The guilty fungus is Armillaria mellea
Once the fungus becomes established, it is difficult to control. Expose the crown of the infected shrubs to air. The fungus cannot exist under dry conditions. Because the fungus thrives in wet, heavy soil, improve drainage and avoid overwatering. Plant resistant azaleas. Dig out and destroy seriously infected shrubs and discard the surrounding soil.
|