INVASIVE SPECIES ALERT
Be on the lookout for these invasive species!
BLUE GREEN ALGAE
What You Need to Know
EMERALD ASH BORER
The 2015 year started off with the removal of 25 ash trees from Onondaga County highway rights-of-ways in the Town of DeWitt. This project was funded in part by the Finger Lakes Partnership for Regional Invasive Species Management (FL-PRISM.) Rick Turk Tree Services used their 26 ton crane with a 100’ boom to airlift the trees and remove them from the roadside.
In anticipation of the adult Emerald Ash Borer (EAB) beetles emerging from the ash trees it is, once again, purple prism season. The sticky purple prisms can be seen hanging in ash trees across Onondaga County. Over the past two years, these prisms have helped Onondaga County and various stakeholders detect the presence of EAB in specific locations. Over these two years, we have seen the known range of EAB expand substantially and this year we expect to find it in even more locations across the County.
This serves as a good reminder to everyone who has ash trees on their property that now is the time to make decisions and take action on managing your ash trees. At this point there are still many options available whether you would like to protect your trees with an insecticide, or whether you would prefer to have your trees removed. Once trees become infested, your options may become limited to removal, and since infested trees are considered extremely hazardous, this will be much more costly. Please consult a certified arborist or a certified pesticide applicator to explore your options.
Now that the trees have fully leafed out, the season for protecting ash trees with insecticides has also begun. The District has begun treating ash trees in County Parks. This project is also funded in part by the FL-PRISM.
EMERALD ASH BORER ON YOUR FARM
On July 22, 2013, Emerald Ash Borer (EAB) was confirmed in Onondaga County. This is not surprising, as the insect has been detected in 13 counties in New York State, 19 states in the United States, and two additional provinces in Canada.
This non-native boring insect from Asia attacks all ash trees. In May the insect emerges from the bark of ash trees through “D”-shaped exit holes that they created by eating their way out of the tree. In June the adult ash borers feed on leaves of the ash trees. In July the Borers mate; a single female can lay 90 to 200 eggs in the cracks of ash tree bark, which will hatch in approximately three weeks. The larvae then eat their way into the cambium layer of the tree (just under the bark) where they spend one to two years consuming the nutrients that are being translocated between the inner bark and the woody stem of the tree. Upon emergence of the beetle, the entire life cycle of borers starts over.
The constant eating on the ash trees will weaken and kill the trees within three to five years. Contacts in mid-western States such as Michigan tell us that a wind speed of 30 mph, which is a very common occurrence here in central NY, will cause these ash trees to break apart and rain down dangerously sized pieces of tree that can hit targets. These targets can be: farm employees in the field or lawn, farm machinery, and barns and outbuildings. It is also possible for pieces of ash trees to have fallen and be hidden in the crops that are being harvested, potentially damaging machinery. Currently, there only two methods of treatment for ash trees include 1) cutting to completely remove the threat of hazard or 2) inoculation of the ash trees with pesticides.
Please take a look at the trees in your hedgerows, around your farmstead, and your access roads. If you have a question about the species of trees growing on your property, or would like more information about EAB, please contact your local Soil and Water Conservation District, USDA NRCS, and/or Cornell Cooperative Extension office.