mountain ash

Mountain ash plants should be watered once a week, and the soil should be kept moist at all times. When watering, thoroughly soak the soil to a depth of 8 to 10 inches - this is deep enough to reach the entire root system. During the hot summer months, water more frequently, possibly twice a week. Make sure to monitor the soil’s moisture level. In dry weather, soil that is excessively dry may not absorb moisture quickly enough, so add water in small amounts at a time. Be sure to water the leaves as well as the soil to keep the plant hydrated.

Mountain ash (Sorbus decora) grows best in full sun, so these trees should receive 6-8 hours of direct sunlight each day. In very hot climates, when temperatures average more than 85°F, some afternoon shade may be beneficial to protect against leaf scorch and sunburn. Plant them in an area with morning sun and afternoon shade, or filtered sun throughout the day if temperature and humidity are high.

Pruning for mountain ash (Sorbus decora) is best done early in the season, typically during the dormant period before the buds break in late winter or early spring. Before pruning, ensure the plant is in good health by evaluating the branches for signs of disease or pests, and removing any dead or damaged branches. When pruning mountain ash, wait until there are 3-5 growth points on the new growth before pruning. Prune no more than 1-third of the foliage from the center of the crown, and avoid pruning young and vigorous branches as this can reduce fruit production. Remove any branches that are creating a congested or typically shaped tree. Annual pruning helps to keep a mountain ash healthy and in shape, and will also encourage the production of more of its unique white flowers.