Planting Trees

County Agent News

Dan Folske

March 29, 2010

Planting Trees

            Spring is tree planting time! Whether you are planting a new shelterbelt around your home, a wildlife planting, or just a few ornamental or fruit trees a few things can make a big difference.

            Weed control is essential! Researchers in Kansas found up to a 300% increase in tree growth when transplanted trees were surrounded by bare ground or a three inch layer of mulch instead of competing grass sod or heavy weed growth. Other research has shown increased survivability as well. In this research nod difference was found between bare ground or mulch treatments. Other research in dry, hot conditions has shown a benefit to mulching which helps keep the soil cooler resulting in less injury to shallow roots and reduced evaporation. Mulch should not be piled up against the tree however. Mulch should be pulled away from the tree trunk leaving a “donut hole” effect. Mulch directly against the tree trunk creates a favorable environment for insects and diseases. Mechanical or herbicide weed control should be used with care. Hoes and rototillers can easily damage tree roots when done too deeply or too close to the trees. Herbicides should always be used only according to the label and care should be taken to avoid drift or herbicide injury.

            When planting trees care should be taken not to let the roots dry out. The tiny hair roots are essential to the survival of the tree and these roots are easily damaged when allowed to dry out.

            Extremely long roots should be pruned rather than coiled in a too small hole. Roots which wrap around other roots will eventually choke off and kill other roots leading to a decline in tree health.

            Container grown trees or trees with wrapped root balls may need to have roots cut or pulled apart before planting.

            Watering new trees can help overcome transplanting shock.

PS: If you need trees to replace those that have died in row plantings contact Connie at the Burke Soil Conservation District as soon as possible.