Boxwood Leafminer Fact Sheet

When the days warm in spring the larvae become active and grow rapidly feeding between the upper and lower leaves for the balance of the summer.

Boxwood leafminer fact sheet.

Spinosad is the least toxic to the environment. Long distance spread of the pathogen is through the movement of infected nursery material. Close up of boxwood leafminer larvae. Boxwoods buxus spp are enjoyed in a range of landscapes as hedges or screens background plantings topiary pieces and other uses.

It is difficult to control the adult leafminers because of their short adult. Dispose of the clippings. This fact sheet from clemson includes using spinosad for control when the leafminers are present in the leaves. Effective control options for boxwood leafminer include applications of neonicotinoids such as imidacloprid e g.

Boxwood leafminer monarthropalpusi flavus is a common and destructive pest that causes significant damage to boxwoods here in the dayton area although the symptoms are often mistaken for winter injury rather than insect infestation since boxwoods are such a popular shrub it s important to control leafminers so they don t spread to neighboring plants and properties. Numerous pests and diseases may. Remove and destroy severely affected plants. Severely shearing the foliage before adult emergence or after egg laying ends will reduce the overall population.

Microphylla littleleaf boxwood and var. As always read and follow label directions paying particular attention to the protection of pollinators restrictions including delaying applications until. See section titled insects related pests. This should eliminate the need to use an insecticide.

Insularis korean boxwood b colchica and pachysandra are susceptible. Japonica japanese boxwood b. These flies are less than inch long and can often be seen swarming around boxwoods in the spring. Boxwood leafminer monarthropalpus flavus.

Leafminers on boxwood shrubs. Boxwood leafminers over winter as partially grown larvae in the leaf blisters. In may the adults force the pupal skin out of the mine where it hangs for a few days after the fly a gall midge. Merit marathon and generics and dinotefuran e g.