Planting a tree is more than placing roots in the ground—it’s an investment in your landscape’s future. Done well, it can offer decades of shade, structure, and ecological value. Done hastily, it may lead to poor growth, early decline, and costly removal. One commonly overlooked issue? Stem girdling roots—a slow, silent threat that often begins below ground.

• Start With the Right Foundation: Skip the deep, narrow hole. Trees need space to spread their roots outward. Dig two to three times the width of the root ball, but no deeper than its height. Over-digging can cause settling and bury the root flare too low.

• Find the Root Flare—And Keep It Visible: This swollen area where trunk meets roots should stay above soil level. Burying it encourages circling roots that constrict water and nutrient flow, a leading cause of urban tree failure.

• Inspect and Prepare the Root Ball: Container-grown trees often come with circling roots; gently loosen or slice the outer roots to break the pattern. For balled-and-burlapped trees, uncover the root flare, remove all twine, burlap, and the top of the wire basket, leaving the bottom intact only until the tree is positioned. Burlap decays slowly—don’t rely on natural breakdown. Never plant too deep, and check for compacted roots.

• Use Native Soil for Backfill: Backfill with the original soil—not compost or potting mix—to avoid root shock and promote steady anchoring.

• Mulch Mindfully: Donuts, Not Volcanoes: Apply 2–3 inches of mulch in a wide ring, keeping it away from the trunk. Mulch piled against the bark traps moisture and creates perfect conditions for rot, pests, and girdling roots.

• Water With Purpose: Deep, consistent watering for the first two years is key. Water slowly so moisture reaches the full root zone, and watch for stress signs like leaf drop or wilting.

Planting a tree is an act of optimism. And when done with intention and a little knowledge, it sets the stage for a strong, enduring presence in the landscape. From root flare to mulch ring, every detail matters—because healthy trees don’t just grow, they thrive.

Until Next Time, Happy Gardening!

By University of Minnesota Extension Douglas County