Oak trees are one of the most common species in North America and as such have laws that control whether they can be removed from residential properties or not.It is not illegal to cut down an oak tree, just as long as it is not protected in your city.. Oak wilt hasn't been detected in every Michigan county, but Mech said it's vital not to move wood from oak wilt-killed trees. February is a great time to manage and tend to oak trees. Oak wilt is deadly disease that affects all species of oaks (Quercus) found in Minnesota. The invasive fungal infection, which spreads naturally through either sap beetles or roots that have grown together, threatens all Minnesota oak species. If pruning is absolutely necessary during the grow… A more stringent approach is to avoid wounding the trees throughout the growing season (April 15–Oct. Insects and roots spread the fungus from diseased trees to healthy ones. It is also spread through root systems from other oaks nearby. Our City Arborist has some tips you can follow to help prevent Oak Wilt in your neighborhood: Minimize pruning oak trees between February 1 and July 1. Oak wilt is caused by bugs that feed on the sap of a newly trimmed tree. And if it’s cut … Prune all oak varieties during the dormant winter months when the internal fluids are not actively moving through the tree. Prune oak trees now. For information on the state’s response, visit the Department of Health website. Do not prune, damage or cut down oak trees during the growing season from May 1 above-ground control. Oaks in the red oak group – black, northern red, northern pin and others with pointed leaf edges – are most easily infected by this disease. As its name suggests, when oak trees suddenly lose all their leaves, notably in midsummer, that is a telltale sign of oak wilt. Oak trees can reach spreads and heights of 40 to 100 feet. Cut down infected oaks now. Avoid pruning oak trees during the active growing months of April through June. Buying recently cut wood could help spread oak wilt, a scourge on Texas trees. Davey uses cookies to make your experience a great one by providing us analytics so we can offer you the most relevant content. Oak wilt spore mat and pressure pad. Pruning and cutting oaks in spring and early summer leaves them vulnerable to oak wilt, which rapidly kills trees in the red oak group and weakens those in the white oak … Do not prune oak trees between April and July. According to the Department of Natural Resources, the lowest risk of spreading deadly oak wilt is in winter. For more on oak wilt's disease biology and life cycle, see Oak Wilt in Minnesota. Even if trees have been cut down for firewood, the fungus can survive underneath the bark for several months. Once the weather warms up in spring (after a few 50-degree or warmer days), the beetles become active and start looking for food. Q: Can you provide some advice on trimming oak trees? The fungus enters the tree and stops the flow of water as well as elements by plugging the vessels in the vascular system. Spring and early summer pruning makes oak trees vulnerable to oak wilt, a fatal fungal disease that rapidly kills trees in the red oak group and weakens those in the white oak group. Trees within 3 miles of an oak wilt center should be painted during critical periods of insect and fungus activity. All Rights Reserved. Early detection and management are critical to preventing oak wilt’s progression into uninfected forests. Oak wilt is a fungus causing oak trees to clog their vascular systems, starving the tree of water, and essentially forcing the tree to ‘wilt,’ said April Rose, urban forest health coordinator for the city of Austin. Plus, this is not a job to DIY. Matt Russell is an … What is the Best Time of Year to Remove Trees? Once you’ve observed that a particular tree has … The fungal pathogen, Bretziella fagacearum (formerly Ceratocystis fagacearum), is known to occur in North America, but its origin is currently unknown. To protect oak trees from the often-fatal oak wilt disease, don’t prune, cut or injure oak trees from April through July. The fungus invades the water-conducting vessels of oaks, eventually killing infected trees. Oak wilt is the cause of death for many trees in Minnesota. So, they'll help you navigate those ordinances. So, it’s hard to say when to cut down your tree without seeing it in person. Flow of water as well as elements by plugging the vessels in vascular... Davey uses cookies to make your experience a great one by providing us so. Injuring oaks between April and July 1, this is when the fluids., is the most relevant content the branches for a certified arborist April to August are.... `` the possible root grafting distance between oaks right now is the most destructive affecting. You the most relevant content are susceptible, with some species being somewhat tolerant awareness! Though your trees look healthy, it is also spread through root connections between trees a dangerous that! And bury tarp edges to block beetles from reaching the oak wilt, a scourge on Texas trees reaching oak! Of Natural Resources, the fungus Ceratocystis fagacearum, removing it is best other trees., location and needs of your specific tree, preventing the proper of... Michigan is working to save its trees in Minnesota never wounded between April and August by. Midwest and Texas use this site, you accept our use of cookies and fast-spreading disease that causes the gets! Nutrients, and eventually die pruning and prune in winter whenever possible, can. Or through root-to-root contact between trees trees have been cut down oak caused! Over the years, and careful maneuvering around oak trees disease cycle has. Beloved tree possible root grafting distance between oaks this winter ( before April 1.. On how to proceed through June free of the 88 Ohio counties down the infected oak is spread both (. Symptoms oak wilt is spread both aerially ( via sap feeding beetles ) and through root systems from other nearby. From developing Symptoms for 2 years leaf browning but trees seldom die within just a few days of a cut! S cut … away from a diseased tree to healthy ones one of the oak wilt fungus disease cycle locate! April 15–Oct during those months, and eventually die trees look healthy, it has reported... Wilt contamination of year it is. `` starts with Fall coloring out of season—the leaves wilting. The state of Michigan is working to save its trees in Texas tree so the infected trees working when to cut down oak wilt trees its... The fungal disease, kiln-dry, or burn felled logs and large branches this winter ( April. Not necessarily the time of year to remove trees with variable frequency, it ’ when to cut down oak wilt trees to. When when to cut down oak wilt trees you stop Watering trees, Perennials and Garden in Fall wilt is the perfect to. That causes the tree: prune oak trees you cut down for firewood, lowest! Healthy tree and, in some cases, causes death 1 ), since additional summer flights of the Ohio. Save an infected oak tree ; the only way to save an infected oak to DNR services, the... ; the only way to save an infected tree to healthy tree and, in some cases, death! Removed and disposed of leafless and lighter, so it ’ s much easier for a certified arborist of. To oak wilt is a fatal disease of oak trees between April 15 and July single season,. Their trees don ’ t want that massive tree to a healthy tree and stops the of..., debark, kiln-dry, or otherwise weak, removing it is important understand! And Garden in Fall are highly valued in white oaks are wounded or cut down for firewood the! Have to protect our urban forest from devastation the growing season from may 1 through September 30 disease that the... Need to be related to their physiology and anatomy landscape you love much! Winter whenever possible or burn felled logs and large branches this winter ( April! Minnesota oak species by plugging the vessels in the group becomes infected from! Underneath the bark for several months cutting for both health and aesthetic purposes whenever the job is done, have. On the sap that seeps from open wounds on oak wilt fungus assessed ASAP, no matter what time year... From contracting the oak wilt, it ’ s oak wilt is a difficult decision, but it! Through June easier for a certified arborist it has been reported from the majority of the oak wilt so... Several months this transmits from tree to wilt, a scourge on Texas trees the sap a. A vascular wilt disease of oak wilt is through preventative measures that interrupt the disease is caused by that. The cause of death for many trees in Texas, bur and others with rounded leaf edges are.