Tree Diseases: Pine-Oak Gall Rust
Introduction Pine-oak gall rust, also referred to as eastern gall rust, is a fungal disease that affects various pine and oak trees. The disease is native to North America. It…
Tree Diseases: Pine-Pine Gall Rust
Introduction Pine-pine gall rust, also referred to as western gall rust, and Woodgate gall rust, is a fungal disease that infects two and three needle pine trees. It is caused…
Tree Diseases: Lophodermium Needle Cast
Introduction Lophodermium needle cast is a fungal disease that affects two and three needled pines, as well as some five needled pines. The disease is caused by the fungus, Lophodermium…
Tree Diseases: Annosum Root Rot
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 the disease is the fungus,…
Insect Profiles: Southern Pine Beetle (Dendroctonus frontalis)
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 pests of conifers. It often…
Tree Diseases: Rhizosphaera Needle Cast
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 disease is the fungus, Rhizosphaera…
In the Northeast: Winter Desiccation of Evergreens
During the winter season, trees must endure a slew of unique challenges, many of which are influenced by the frigid climate, and harsh, dry weather. One of the more common…
Winter Care for Fruit Trees
Introduction Winter is an ideal period to care for your fruit trees. Performing general maintenance on fruit trees, and ensuring that they are protected from winter damage will help them…
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, coupled with the inclement weather,…
Insect Profiles: Asian Lady Beetle (Harmonia axyridis)
Introduction Asian lady beetle (Harmonia axyridis) is an exotic beetle in the family Coccinellidae. The insect is native to Asia, where it is widespread. In the 1960s, the United States…
- 1
- 2
- 3
- 4
- …
- 28
- Go to the next page