It is most likely squirrels. Squirrels are part of the rodentia family that use old bones in the forest to cut their teeth. If they don’t, their teeth will grow out of their skull and kill them. Since our urban forest contains more squirrels than carcasses these days, we see a lot of damage to their second favorite medium, the hardwood of maple trees. Maples are also a little sweet treat for them (think maple syrup). Our native Bigleaf and Vine maples, along with Japanese and Norway maples, are all dental delicacies for the squirrel. As tree climbers ourselves, the squirrel is easy to appreciate, and is a welcome companion in the canopy. Active nests are often encountered and navigated around. Some jobs are postponed until after the young are mature enough to leave the nest, which can be up to 4 months after birth. Moms can have 2 gestation periods, producing litters in the early spring and fall. We install deer antlers to distract them from chewing as an alternative to other management strategies.
Specimen trees in the right locations can add massive dollar amounts to property values. Large fines are levied against those that unlawfully remove trees. How are these amounts quantified for a living thing? Let our qualified arborist consultant assess the value of your trees with the most up-to-date techniques that will hold water in a court of law. We are not lawyers, so seek legal council first and foremost. Our objective reporting and results can assist in Real Estate transactions, unauthorized cutting disputes, insurance claims, and even lawsuits. Again, please consult with your attorney for the latter!
It’s already here. Currently, the outbreak has not traveled south of Forest Grove that we know of. Colleagues up there have stated that they’ve pulled 15 adult EAB from their truck after leaving a jobsite, and residents of the community, out of necessity, going about their daily lives to travel to work, etc, unknowingly transporting these buggers. Quarantine efforts in most of the country have proven difficult. EAB has been said to be the most destructive pest that North America has ever seen by many government agencies. Locally, the worst impacts will be seen out in the wetlands. It is mostly comprised of our native Oregon ash, Fraxinus latifolia, which will decompose into calcium, where primarily noxious weeds will grow. For more doom and gloom reading, see the State of Oregon Emergency Preparedness Plan for EAB
The best time to prune fruit trees in Eugene, OR is in the dormant winter months between late November and early March.
You can protect your trees from the next big ice storm by having our certified arborists create a management plan to balance your trees. End-weight reduction and subordination procedures can help reduce the risk of storm damage.
An arborist is a specialist in the art and science of caring for individual trees. An ISA Certified Arborist is trained to understand the needs of trees and provide the care and maintenance necessary to enhance a tree’s health, beauty, and structural soundness. (Source – pnwisa.org) Staff at GreenTree Arborists maintain CEU’s and compete in Pacific Northwest Chapter tree climbing competitions and conferences to stay on the cutting-edge of tree service industry standards.
If you live in the Willamette Valley and have a birch tree, it is likely exposed to the bronze birch bore infestation. The systematic insecticide Imidacloprid can temporarily relieve your tree of the pests, but it is also lethal to honey bees and other pollinators. A healthy tree is the best defense, so have our ISA certified arborists come out for a free estimate.