Deep root watering is slow watering that soaks the soil down to a tree's root zone, usually 12 to 18 inches below the surface, rather than wetting only the top few inches. It matters because deep moisture grows deep roots, and deep roots help a tree survive drought, heat, and strong wind.

Why do deep roots make a tree stronger?

Because deeper soil holds moisture longer than the surface. Roots that grow down into it keep finding water through dry spells and reach nutrients far below the surface, while shallow roots dry out quickly and anchor the tree less firmly against wind.

How is deep root watering done?

Slowly, around the dripline, the ground beneath the outer edge of the branches, with about 10 gallons per inch of trunk diameter. A soaker hose left running for several hours or a deep root tool inserted 12 to 18 inches into the soil delivers the water without runoff.

How can deep moisture be held in the soil longer?

With a soil treatment that holds moisture. To keep water in the root zone longer between deep waterings, Hydretain Root Zone Moisture Manager is rinsed into the soil from a hose end sprayer, reducing how often watering is needed for up to 3 months.

Frequently Asked Questions

Is deep root watering only for large trees?

No. Young trees need it about once a week, and established trees need it less often but just as deep.

Does deep watering help the soil itself?

Yes. It helps prevent surface compaction, which can suffocate roots and limit how much water and nutrients they take up.

Does deep watering help trees resist disease?

Yes. Deeper roots leave a tree more resilient against disease as well as drought and strong wind.

Can a watering bag provide deep root watering?

Yes, for young trees. Deep saturation with every fill is what the Treegator Original Slow Release Watering Bag is designed for, on trunks of 1 to 8 inches filled about once a week.