- Pruning vs Topping
Often when people want there tree pruned or the crown reduced, they ask a tree service to "top" their tree. However, topping and pruning are two very different procedures. Pruning benefits the tree while topping only harms the tree, creating hazards and headaches for homeowners.
- Anthracnose
Anthracnose is a foliar disease and affects a large population of shade trees. This disease often appears serious but in reality it rarely kills a tree.
- Apple Scab
Apple Scab is a fungal disease that causes serious stress to ornamental crabapple trees. Spores will develop on diseased leaves on the ground.
- Cedar Apple Rust
The two most common rust diseases are cedar-apple rust and cedar-hawthorn rust. The two diseases have similar affects on trees but they require a different host species.
- Gouty Oak Gall
This twig disease has historically been disregarded as a cosmetic tree problem. Large growths develop on the stems of oak trees and cut off the flow of nutrients out to the tip of the twig.
- Oak Wilt
Oak wilt is a fungal disease attacking oak trees in eastern and central U.S. It causes rapid death of trees in the red oak group and a slower decline of trees in the white oak group.
- Rhizosphaera
The Rhizosphaera fungus attacks spruce trees in Missouri. The disease is encouraged by poor air circulation and high humidity. This disease does not usually kill trees, but they may become largely defoliated and unsightly.
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- Emerald Ash Borer
Emerald Ash Borer, Agrilus planipennis Fairmaire, is an exotic green beetle discovered in Michigan in 2002. This beetle is responsible for killing tens of millions of ash trees in the U.S. and has caused the USDA to enforce quarantines in 12 states, including Missouri and Illinois.
- Flowering Ash Gall Mite
Though most galls are caused by insects, this one is caused by an eriophyid mite called Eriophyes Fraxinivorus. These tiny mites feed on the male flower clusters of the ash tree in the early spring season & in doing so; transform the male flowers into irregular, fringed masses.
- The pine needle scale, Chionaspis pinifoliae (Fitch), is probably the most common armored scale found on conifers in the United States and Canada. The white, oystershell shaped scales can completely cover needles, causing plant discoloration to needle and branch death.
- Bagworm (Thyridopteryx ephemeraeformis) is the larval stage of a moth native to Pennsylvania that is reported to feed on over 100 different plants. It is most common in the southern part of the state, where populations can build up rapidly and become serious pests.
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