How Deep Do Blueberry Bush Roots Go?

The roots of the blueberry bush require careful maintenance.

The shallow roots of blueberry bushes make them a challenge for gardeners. Keeping an eye on soil drainage while protecting fragile feeder roots is the first step in helping the plants successfully produce their delicious little fruits.

Depth

Blueberry bush roots grow right below the soil's surface. The shallow root system extends less than 2 feet into the ground. Since the shallow roots compete with weeds for much needed water and nutrients, keep the area weed-free.

Soil

The plants require well-drained soil that's at least 18 inches in depth. The roots cannot stand exposure to water-saturated soil that stands within 18 inches of the surface for more than a few days. Otherwise, the plants may develop root rot and die. Cultivars less susceptible to root rot include rabbiteye blueberries.

Mulch

The feeder roots near the surface of the soil can benefit from a layer of mulch. The mulch should be about 3 inches deep and extend 2 feet out from the plants. If you plan to grow two or more rows of blueberries, a 4-foot wide strip of mulch between the rows helps protect the surface feeder roots.

References

• University of Florida IFAS Extension: Blueberry Gardener's Guide
• North Carolina Cooperative Extension Service: Growing Blueberries in the Home Garden

Resources

• Iowa State University: Horticulture & Home Pest News: Growing Blueberries in the Home Garden