When to Plant Willow Trees?

Willows are a graceful, romantic accent in the landscape.

Graceful willows are an outstanding choice for a fast-growing, dramatically beautiful tree that can provide shade, a wind screen and beauty with relatively low maintenance. Willows require a lot of space for their massive root systems and their sweeping crowns. Although they prefer moist soil, they are capable of thriving in drier areas if watered regularly. Willows are fast-growing, developing into graceful majesty in a short time.

Planting Time

In cooler climates it is best to plant a willow tree during the dormant season from late January until mid-March. During this time, weather conditions are cool, so the plant roots can establish before the spring rains and summer heat stimulate new growth. However, in warmer climates, trees can be planted year round if they are properly cared for in nurseries and during transport. Sufficient water is always essential.

Digging the Hole

Choose a site that will not conflict with underground utilities, septic tanks, sidewalks or building foundations. Willows' massive root systems will raise havoc with obstacles, so they need a truly open space to thrive and not become a nuisance. Dig a hole that is wide, as much as three times the width of the root ball, and dig it as deep as the root ball itself. Breaking up soil in an area around the new tree encourages healthy root expansion in the soft soil. Find the trunk flare, where the roots expand from the trunk. This point should be partially visible when the tree is planted. Remove the tree from the container if there is one and loosen the root ball. If there are any circling roots, trim them away.

Planting

Place the plant in the hole so it is sitting high enough to expose part of the trunk flare. Most new roots develop in the top 12 inches of soil. Over time the tree will settle, so it is safer to plant the tree a little high than at or below its original growing depth. Planting too deep will make it hard for the young roots to get the oxygen they need to develop. While placing the tree in the hole, lift by supporting the root ball instead of holding the trunk.

Filling Around the Tree

Check to make sure the tree is standing straight when viewed from different angles before beginning to backfill the hole. After the tree is in place, fill about one-third of the hole and pack firmly around the base of the root ball. If there is fabric or other wrapping protecting the trunk or roots, cut it all away and remove it without damaging the tree. Continue to fill the hole and pack firmly to eliminate air pockets that can dry out the roots. Add a few inches of soil, pack and add water until the hole is filled.

Planting Follow-up

Willows traditionally can be seen on the banks of a river.

When the tree is properly planted, staking will not be necessary, unless there are threats of vandalism, lawn mower damage or wind. If staking is used, remove after the first year of growth. Mulch the ground around the tree to preserve moisture and moderate temperatures, while discouraging weeds. Use organic matter such as shredded bark, pine straw or peat moss. Don't cover the trunk flare. Keep soil moist below the mulch layer but avoid over-watering. Reduce the amount of watering in the fall as cooler temperatures arrive. Prune lightly, if necessary. Do not fertilize at the time of planting, and fertilize only lightly during the first year of growth.

References

• Trees Are Good: New Tree Planting
• Fast-Growing Trees Nursery: Weeping Willow Tree Planting Instructions
• Weeping Willow Planting Instructions
• SavaTree: Tips and Resources, Willow Tree

Resources

• USDA Natural Resources Conservation Service:Users Guide