Tree Diseases: Dothistroma Needle Blight of Pines
Introduction Dothistroma needle blight, often referred to as red band disease in the western United States, is a devastating foliar disease of pines. The causal…
Introduction Dothistroma needle blight, often referred to as red band disease in the western United States, is a devastating foliar disease of pines. The causal…
Introduction Southern pine beetle (Dendroctonus frontalis) is a small insect that is native to North America. The insect is considered one of the most destructive…
Introduction Annosum root rot, also referred to as annosus root rot, is a fungal disease of pine, spruce, and fir trees. The causal agent of…
This is the second half of a two part series on saucer magnolia cultivars. Introduction Saucer magnolia is a popular selection for cultivation. Numerous cultivars…
This is the first half of a two part series on saucer magnolia cultivars. Introduction Saucer magnolia is a popular selection for cultivation. Numerous cultivars…
Introduction Rhizosphaera needle cast is a fungal disease that affects many spruce trees, particularly Colorado blue spruce, and Engelmann spruce. The causal agent of the…
Introduction Pine wilt disease is an affliction of pine caused by the pine wood nematode, Bursaphelenchus xylophilus. The pine wood nematode is a microscopic parasite.…
Introduction Pine needle rust is a fungal disease that affects many species of pine. The disease is caused by over twenty species of Coleosporium fungi.…
Introduction Brown spot needle blight is a fungal disease of pine trees. The disease is caused by the pathogen, Mycosphaerella dearnessii. The damage produced by…
Introduction Japanese beetle (Popilla japonica) is a long, green beetle that is native to Japan. It is considered one of the most devastating pests of…
Introduction Bagworm (Thyridopteryx ephemeraeformis), also referred to as eastern bagworm, common bagworm, common basket worm, North American bagworm, or evergreen bagworm, is a native insect…
Introduction Cooley spruce gall adelgis (Adelges cooleyi) is a small black insect native to North America. The insect causes the formation of galls on several…
Introduction Powdery mildew is a fungal disease that affects a wide range of plants. It is caused by numerous fungi in the order Erysiphales, of…
Introduction Black vine weevil (Otiorhynchus sulcatus), also referred to as vine weevil or taxus weevil, is a serious pest of ornamental plantings. The insect is…
Introduction White pine weevil (Pissodes strobi) is an insect that attacks and deforms at least twenty different tree species. The insect is sometimes referred to…
This is the second half of a two part series on saucer magnolia. The following examines the cultivation of the tree, as well as its…
This is the first half of a two part series on flowering dogwood. The following examines the tree’s distribution and habitat, developmental traits, longevity, height,…
Introduction Eastern spruce gall adelgid (Adelgis abietis) is an insect that inflicts considerable damage to ornamental spruce trees. The larvae induce the formation of cone-like…
Introduction Boxwood leafminer (Monarthropalpus flavus) is a small midge that feeds on the leaves of boxwood. It is considered the most serious pest of boxwood.…
Introduction White pine bark adelgid (Pineus strobi) is a small insect that defoliates eastern white pine, and several other species of pine. Though seldom fatal,…