Conifer Tree Planting Recommendations

Planting Time

• The best time to plant evergreens is during early fall, recommends the University of Wisconsin Extension. Though the trees may also be planted during spring and summer, new trees require more care during these times. During early fall conifers are in their dormant state and naturally have a reduced need for water and nutrients. This corresponds with the low ability of the newly transplanted roots to absorb and supply water to the tree. Planted in early fall, the tree has enough time to get established before the active growth season starts in spring.

Site and Soil

• Certain conifers are highly sensitive to soil types and grow well only in certain soil. Regardless of soil type, the general rule of the thumb is to choose a well-drained soil as all conifers are poorly tolerant of heavy, wet ground. Arborvitae is however an exception and tolerates low lying, moist areas. There is no need to amend the soil with organic matter prior to planting unless the soil is very compacted or very light and porous. In areas with poor drainage it is best to plant on a raised bed. Select an area of full sun or partial shade for best growth, depending on species.

Planting Hole

• Dig a planting hole that is twice as wide as the root ball of the conifer and shallower than the root ball. For a container-grown tree, tap the sides lightly to release soil from the sides of the container before removing tree. Lay larger containers on their sides to slide trees out. Do not pull the plants out vertically. Loosen roots around the root ball before planting. Plant deep enough for trunk flare or the tree crown to be slightly elevated than soil level.

Water

• A newly planted conifer requires regular watering throughout the first year of growth for healthy establishment. Water thoroughly to soak the ground every week especially during dry weather conditions. If the conifer is planted in sandy soil, water more frequently or reduce watering for the trees growing in clay soil. Water thoroughly during November and stop watering for the winter. This is especially important in areas with severe winters where the ground freezes as this prevents winter burn in trees.