How you plant trees or shrubs can have a serious impact on their health. Taking the time to do it right could save you a lot of trouble in the long run!

A view of the lower truck of a new tree in the ground

The tree flare should be visible when placed in the hole. Photo by: Brian Kunkel, University of Delaware

You should:

Research the planting site’s soil chemistry, soil type, and drainage
Choose a tree or shrub compatible with your site
Select an appropriate time of year to plant
Measure the size of the root ball
Dig a hole 2-3 times the width of the root ball
Remove the cage before placing
Spread mulch evenly over the root area
Stake when necessary to support growth
Irrigate based on plant species, weather, season, and soil drainage

The size of the tree root ball should be measured prior to planting. Photo by: Brian Kunkel, University of Delaware

The “Don'ts” of Plant Installation

You shouldn't:

Dig the hole deeper than the root ball
Dig the hole just wide enough to fit the root ball inside
Add fertilizer or compost to the bottom of the planting hole
Plant during seasons of severe heat or cold
Bury trunk flare during planting
Heap mulch against the trunk
Water too much, too frequently
Neglect to water enough during dry spells

Tree planted improperly. Photo by: Brian Kunkel, University of Delaware The tree above has a mulch mountain surrounding the trunk of the tree. This is not the proper way to plant a tree even though it is commonly viewed in Delaware landscapes, parks, and parking lots throughout the state. The mulch should only be 1 - 2 inches and not touch the trunk of the tree.

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