A mature tree is deep root watered by slowly applying about 10 gallons per inch of trunk diameter around the dripline whenever the top few inches of soil are dry, so the water soaks 12 to 18 inches down. A tree with a 12 inch trunk, for example, takes about 120 gallons per watering.

Why does a mature tree need less frequent but larger waterings?

Because its roots are established and spread wide, reaching well past the dripline, the ground beneath the outer edge of the branches. A mature tree can go longer between waterings than a young one, but each watering has to wet that whole root zone deeply.

How is a mature tree watered deeply without runoff?

Slowly, at several points around the dripline. A soaker hose laid in a ring there can run for several hours. Unlike a hose laid on the surface, Deep Drip 24" Tree Watering Stakes are pushed into the ground, 5 to 6 around a mature tree.

When does a mature tree need deep watering?

During dry spells, once the top few inches of soil are dry, and more often in sandy soil, where water drains quickly. Watering continues through fall until the ground freezes.

Frequently Asked Questions

Can a large watering be split into sessions?

Yes. Spreading 100 gallons or more over a day or two gives the soil time to absorb it instead of letting it run off.

Does a mature tree still need watering after rain?

Sometimes. A light rain may wet only the top few inches, so the soil is checked before watering is skipped.

What signs show a mature tree is short of water?

Wilting, yellowing, browned leaf edges, and leaves dropping early in summer.

Do evergreens need deep watering before winter?

Yes. Evergreens keep losing moisture through their needles and leaves in winter, so a deep soak before the ground freezes helps carry them through.