The University of Minnesota Forestry Department posts the oak wilt risk levels for.

The best time to prune depends on the species of the tree and the time of year. The best time to prune trees in Minnesota is between late fall and spring. Recommended Timing To keep trees' health intact, the safest time to trim is during the late dormant season in winter, typically between the months of February and early April.

Because deciduous trees are bare at this time of year, gardeners can easily see the branches to make cuts. Prune apple trees, including flowering crabapples, mountain ash, hawthorns and shrub cotoneasters in late winter (February-early April). Spring or summer pruning increases the chances for infection and spread of the bacterial disease fireblight.

Autumn or early winter pruning is more likely to result in drying and die-back at pruning sites. Mar 14, If you live in an area where oak wilt occurs, it is critical to prune oak trees before the high risk infection period begins in April. The risk status for oak wilt is updated as weather conditions change, but in a normal year high risk of oak wilt infection occurs in April, May, and June.

Feb 25, This young apple tree needs some light pruning.

In this case your tree is more likely to emerge from its dormant state at the first sign of warmer weather the next year.

Hello there, fruit growers. We know you’re looking for an excuse to break out your pruning shears for the gardening season. Good news - it is time to prune your fruit trees! The UMN Extension Horticulture team has you covered with videos and written instructions on how to prune home apple. The winter months – December, January, and February – are the best time to prune oak trees. Deciduous trees can be pruned at other times of the year with little or no negative consequences. However, if possible, avoid pruning deciduous trees in spring when the trees are leafing out and in fall when the trees are dropping their leaves.

Tree planting and care. This page is designed to help landowners learn more about tree planting and care.

Most pines are best pruned in mid-June before the needles start to unfold.

But, before you place your shovel in the ground, you'll need to know how to plant the right tree, in the right place, the right way, and maintain it for many years. Trees are truly a lifetime investment, whether in your backyard or back woods.