Minnesota Tree Surgeons, LLC
1805 California Street NE
Minneapolis, MN 55413 (612) 216-1767
(651) 343-0389 email@example.com
Top Ten Tree Problems
- Two-Lined Chestnut Borer: TLCB, Agrilus bilineatus, is an opportunistic insect that attacks weakened oak trees, red oak being its preferred host. Best management is prevention, proper watering, avoid soil compaction, mulch for moisture and to prevent bark damage.
- European Saw Fly: ESF love your pine trees, larvae feed on one-or two year old pine needles. Usually sawfly populations are kept low by natural enemies, if infested remove the larvae colonies, pesticide application may be needed.
- Verticillium Wilt: VW is caused by soil-borne fungi. In Minnesota; ash, catalpa and maple are frequently infested. Leaf curling, drying and dieback of shoots and branches are signs of VW. Water, Soil fumigants, mulch and fertilize. Remember, the fungi is in the soil if tree dies get a VW resistant tree or shrub. My favorites; Ginkgo, Hackberry, Hickory, Larch.
- Borers: Borers are attracted to unhealthy trees, burrowing in and laying eggs inside the trunk. The best defense against borers is to keep your trees healthy and unstressed. Birch looking unhealthy, look for D-shaped exit holes. Water, mulch, fertilize, prune in winter.
- Hemlock Woolly Adelgid: One of the most common pests, these insects can cause the death of a tree if left untreated. They leave behind a telltale white wax and target primarily older trees.
- Scale Insects: These insects target primarily hardwoods and conifers. Some signs of an infestation include abnormal leaf and shoot growth, yellow or red leaves, and branch gouting.
- Anthracnose Disease: This fungal disease affects deciduous and flowering trees. Look for a spotting of foliage in spring and summer.
- Winter Injury: Even during mild winters, evergreens can lose moisture and not be able to replenish it. Thus, make sure your evergreens have sufficient soil moisture.
- Black Knot: Cherry tree have coal like swelling? Cut of all shoots and branches bearing black knot. Should be pruned out over winter 8" below the knot. Should be monitored on a daily basis by homeowner.
- Aphid Insects: Aphids are small and pearl shaped. An infestation can cause yellow discoloration and defoliation.