55 Box Shrub Diseases

Boxwood is a very popular evergreen shrub for decorative edges around gardens and homes.

Box shrub diseases. Long distance spread of the pathogen is through the movement of infected nursery material. Brown or yellowing boxwood shrubs. Box blight is a disease which affects boxwood buxus sempervirens and its family of plants the disease is caused by two genetic types of fungi cylindrocladium buxicola and volutella buxi that attack the leaves and stems of the plant thankfully it does not affect or kill the roots so with the right box blight treatment you don t have to replace the entire plant. Damage is especially noticeable on american box. This japanese boxwood is a fast grower and resists boxwood blight as well as winter. Psyllids may affect the looks of the plant but unlike leaf miners they are seldom a threat to the overall health of the shrub. Watch for leaf spots stem dieback and bare patches which are tell tale signs of.

Decline decline is the name given to one of the more mysterious diseases affecting boxwoods. Keep reading to learn more about diseases affecting boxwoods and how to go about treating boxwood diseases. Remove and destroy severely affected plants. Insularis korean boxwood b colchica and pachysandra are susceptible. Thanks to their tolerance of heavy pruning. Boxwood psyllids are small insects that cause new leaves to cup as the nymphs extract sap from the tender foliage. The boxwood genus buxus spp consists of about 70 species of evergreen shrubs characterized by small rounded evergreen leaves and star shaped flowers.

If you live in a place that experiences freezing temperatures in the winter your boxwood may have been damaged by excessive snow ice and cold or even winter burn. Volutella blight is a disease of box caused by. Many shrub diseases are obvious at first glance producing such symptoms as shriveled spotted browning or deformed leaves and limp stems. It s at risk for a number of diseases though. In such a case you may have to do some pruning to get at the most seriously affected parts. If you suspect a disease examine the whole shrub or if it is part of a dense hedge as much of it as you can. Here are some images of the diseases and pests common to box.

Microphylla littleleaf boxwood and var. Japonica japanese boxwood b. 20 best boxwood shrubs to plant in your garden dwarf or low growing boxwoods. It s also suited for dense low hedges. If boxwoods have died and boxwood decline disease is confirmed do not plant english boxwood buxus sempervirens suffruiticosa in the same site american boxwood buxus sempervirens and littleleaf boxwood b. Microphylla can be used as a replacement as they are resistant to decline but if phytophthora root rot is confirmed the site should be avoided for future boxwood plantings. What is box blight.

The cold nipped tissues can take many months to become.