What Are The Dates To Trim Oak Tree In Wisconsin?

The DNR Recommends Not Pruning Until After July. MADISON, Wis. – April brings a high risk for the often-fatal oak wilt disease across the state, and as a result, the Wisconsin Department of Natural Resources (DNR) recommends not pruning or cutting oak trees from April through July.

When should oak trees be pruned?

  • Learn when to prune. For oak trees, the recommended pruning time is November through March. In the summer months, pruning oak trees can attract small beetles that spread oak wilt fungus disease. If you don’t prune your oak trees between April and October, you can prevent your oaks from getting this disease.

When can you trim oak trees in Wisconsin?

The best period to prune oaks is between the months of October and March. In spring, stop pruning when daytime temperatures reach 50 degrees. This is because oak wilt — a fatal disease of oaks — is spread by beetles that feed on the sap of tree wounds.

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What month can you trim oak trees?

Oak wilt is most active from April to July, which is why you should never trim oak trees in the summer. To be safe, you should avoid pruning between April 1 and October 1. Davey arborists recommend pruning oak trees between November 1 and March 31.

When should you not trim an oak tree?

According to experts at Michigan State University Extension, the normal time-tested advice to prevent oak wilt is to not prune oaks after April 1, otherwise you risk injuring oaks. While risk of infection decreases after mid-July, it’s prudent to avoid pruning any type of injury of these majestic trees until November.

When can you trim oak trees to avoid oak wilt?

Homeowners can reduce the risk of oak wilt infections by not pruning or otherwise injuring oaks after April 15. While high risk of infection decreases to lower risk after mid-July, it’s prudent to simply avoid pruning oak trees from just prior to bud break to leaf drop. This means April to November.

How often should an oak tree be trimmed?

Young oaks are pruned to promote growth and will respond well to proper pruning, usually sprouting copious new growth. They should be pruned in mid to late winter: December and January are the months recommended by The National Forest Company.

When can you trim trees in Wisconsin?

The best time to prune any deciduous tree is when it is dormant, typically November – March in Wisconsin. The second best time is mid-summer, after leaf growth is complete. The worst time to do major pruning is in the spring, when tree buds and/or leaves are still growing and food reserves are low.

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Can you trim an oak tree in the spring?

Contrary to what many homeowners assume, summer is the worst time of year to cut off oak branches. Instead, it’s best to prune from late fall to early spring— November 1 to March 31 to be precise. These are the months when oak trees are less vulnerable to disease and infestations.

Is it OK to trim live oak trees in the summer?

Our beloved oak trees should never be trimmed during the summer months. This is because oak trees have a disease called Oak Wilt, which is spread by pests and could infect and even kill oak trees that are trimmed between April and October. Always wait until the fall and winter to trim oak trees.

Can you prune oak trees in spring?

The blanket recommendation from Texas A&M Forest Service is to not prune Oak trees in the Spring months (mid February – early June) due to the chance of Oak Wilt spread. Instead, they recommend pruning oak trees July through mid-February.

Can you prune an oak tree to keep it small?

Can you prune an oak or cherry tree to keep it small? Yup! You can keep oak and cherry trees small, too. While arborists prune fruit trees in late spring or early summer, you want to avoid pruning oaks between April and August to prevent spreading oak wilt.

Why does my oak tree have dead branches?

Dying oak tree branches are often a sign of poor growing conditions, illness or pest infestations. Prompt treatment can help reduce damage, promote proper growth and extend the lives of your oak trees.

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Can I treat oak wilt myself?

We recommend a trunk injection of Propizol. Propiconazole is a systemic fungicide that will suppress Bretiziella fagacearum. Because Oak Wilt is spread through root grafts and insect carriers, We recommend the treatment of non-infected oaks in close proximity to the infected trees to slow the spread of the disease.

Is it safe to prune oak trees?

Yes, oak trees should be pruned regularly to remove dead, diseased, or damaged branches and to thin out the canopy. Hire or consult a professional arborist before felling large branches. Remove 1/3 of the branches once a year or every several years. My 10-year-old oak tree has a straggly branch that’s very high up.

What are the signs of oak wilt?

Oak wilt is usually identified in red oaks by rapid leaf discoloration and wilting. Often the initial symptom is a subtle off-green color shift that may be visible in the upper portion of the tree crown. This symptom is apparent in the northern part of the disease range in late June to early July.

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