Why Proper Watering Matters Most
The most important thing that can be done for your tree is proper watering. Water is the source of life for all plants, and spring watering deserves special attention because trees put on significant growth during that season.
Signs a Tree Isn't Getting Enough Water
When a tree is under-watered, it reduces its foliage to bring water absorption back into balance with the leaves it has to support, which shows up as crown dieback. Height and diameter growth slow down, and the effects show up in the tree's own growth rings, which record nutrient and moisture availability season by season. In severe cases, prolonged dehydration can kill the tree.
Why a Sprinkler System Alone Isn't Enough
Watering your trees with a sprinkler system is better than doing no watering at all, but the amount of water a tree needs is more than a sprinkler can typically provide. Moisture needs to reach 12 to 18 inches deep to do the tree real good.
Putting a hose at the base of the tree and letting the water trickle for 15 to 25 minutes will let the water soak in deep without running off. A soaker hose is another good option if you'd rather not stand there with a hose.
Mulching to Protect Soil Moisture
A layer of mulch around the tree helps maintain even soil temperature through weather swings, keeps soil moisture from evaporating as quickly during summer, and adds nutrients back into the soil as it breaks down.
Just don't pile mulch directly against the trunk — doing so traps moisture against the bark and promotes rot.
Related reading
See all guidesDrought & Moisture Stress
What happens when a tree doesn't get the water it needs over an extended period.
Plant & Tree Fertilization
Watering and fertilization work together to keep trees vigorous through the growing season.
Root Care
How healthy roots translate to a healthier, more drought-tolerant tree.


