Tree Care in Winter: The Benefits of Pruning in Winter
Introduction Winter is an ideal period for pruning trees and shrubs. Pruning in winter is often referred to as dormant pruning. Dormant pruning offers numerous…
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Insect Profiles: Fall Cankerworm (Alsophila pometria)
Introduction Alsophila pometria, also referred to as fall cankerworm, is an insect native to North America. It is a member of the family of moths…
Tree Care in Winter: Winter Tree Care Recommendations
Introduction Winter is an ideal period for maintaining trees and shrubs. As cool temperatures prevail, many plants enter a dormant state. However, the frigid temperatures,…
Tree Diseases: Crown Gall
Introduction Crown gall is a tree disease of many woody shrubs, and some herbaceous plants. The disease is caused by the bacterium Agrobacterium tumefaciens, a…
Tree Diseases: Bacterial Wetwood (Slime Flux)
Introduction Bacterial wetwood, often referred to as slime flux, is a bole rot that afflicts hardwood trees. The disease is associated with numerous bacteria, which…
Abiotic Disorders of Trees: Biological and Botanical Disorders
Introduction The genetic composition of a plant species is expressed through its physiological and morphological characteristics. Whether these characteristics are perceived as normal depends on…
Tree Profiles: Flowering Dogwood Cultivars, Part 2
This is the second half of a two part series on flowering dogwood cultivars. Introduction Flowering dogwood is one of the most frequently cultivated trees…
Tree Profiles: Flowering Dogwood Cultivars, Part 1
This is the first half of a two part series on flowering dogwood cultivars. Introduction Flowering dogwood is one of the most frequently cultivated trees…
Tree Profiles: Flowering Dogwood (Cornus florida), Part 2
This is the second half of a two part series on flowering dogwood. The following examines the cultivation of the tree, as well its damaging…
Tree Profiles: Flowering Dogwood (Cornus florida), Part 1
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,…
Insect Profiles: Gypsy Moth, Part 2
This is the second half of a two part series on gypsy moth. The following examines the insect’s predators, its impact on trees, and some…
Insect Profiles: Gypsy Moth, Part 1
This is the first half of a two part series on gypsy moth. The following examines the insect’s distribution and range, its preferred hosts, and…
Tree Diseases: Dutch Elm Disease
Introduction Dutch elm disease is a fungal infection that affects many species of elm. It is one of the most destructive tree diseases in North…
Tree Profiles: Japanese Maple Cultivars, Part 3
This is the final segment of a three part series on Japanese maple cultivars. Introduction Japanese maple is a species of tree often used for…
Tree Profiles: Japanese Maple Cultivars, Part 2
This is the second segment of a three-part series on Japanese maple cultivars. Introduction Japanese maple is a species of tree often used for cultivation.…
Tree Profiles: Japanese Maple Cultivars, Part 1
This is the first segment of a three part series on Japanese maple cultivars. Introduction Japanese maple is a species of tree often used for…
Tree Profiles: Japanese Maple (Acer palmatum), Part 2
This is the second half of a two part series on Japanese maple. The following examines the pruning and cultivation of the plant, as well…
Tree Profiles: Japanese Maple (Acer palmatum), Part 1
This is the first half of a two part series on Japanese maple. The following examines the tree’s developmental traits, distribution and habitat, longevity, height,…
Tree Diseases: Gall Producers
Gall diseases are common on many trees and shrubs. Galls are abnormal swelling growths that form on the leaves, twigs, branches, roots, and flowers of…
Tree Diseases: Galls on Plants
Introduction Galls are abnormal swelling growths that occur on the leaves, twigs, branches, roots, and flowers of plants. A gall’s characteristics are determined by its…