Juniper Bush Root System

Root Basics

• Growing up to 15 feet wide and 10 feet tall, junipers extend roots horizontally in search of nutrients, oxygen and moisture. Their unique, but dense, foliage harnesses sunlight energy for photosynthesis and vigorous root growth. As a result, roots typically grow past the drip line to twice the shrub's height in mature, healthy specimens. These fibrous roots break through soil and form dense structures for strong anchorage in windy conditions. Their root system also makes them successful in finding ample natural resources to maintain normal growth; they survive drought well where other plants may wilt.

Irrigation

• Junipers prefer full sunlight locations along with well-drained soil. Although ample sunlight increases energy production, it also dries the soil quickly, especially during the summer. Water your juniper about once a week to a 24-inch depth during warmer seasons. Insert a soil moisture meter near the bush to accurately measure your watering session. Natural rainfall moistens the soil at the drip line. Simulate this process, and continue watering outward from the drip line by using a drip system seeping moisture directly into the ground. You avoid wetting the foliage and trunk with drip systems and save water at the same time.

Root Persistence

• Junipers demonstrate their hardy survival tactics through stem cuttings and new root growth. In nature, for example, a stem cutting left on the soil can easily root and form a new juniper shrub. This vegetative reproductive process allows this species to propagate quickly without forming energy-consuming seeds. Insert a healthy stem approximately 4 to 12 inches long into a sandy growing medium, and add water. After almost two months, the cutting should have relatively long roots extending into the medium. Wounding, or scarring, the outside stem tissue stimulates vigorous root growth as well because juniper detects stress and directs energy into repair and development.

Root Rot

• Juniper bush root systems are vulnerable to root rot when grown in wet conditions. If roots are wet, rot sets in from various fungi pathogens. As roots decay, they fail to pull critical nutrients and moisture into the plant's vascular system. Junipers quickly fail and display wilted, discolored foliage. Avoid planting junipers in heavy soils or potential flood sites. Cultivate your garden soil before planting or create a raised-bed to keep your juniper's roots moist but not soggy.