American mountain ash

American mountain ash should be watered about once or twice a week, depending on weather conditions. During hotter months, water more frequently, as this species of plant prefers a consistently moist soil. In the spring and summer, provide the plant with approximately 1 inch of water every 1 to 2 weeks. During the fall months, decrease watering to about every 3 weeks. During winter and/or droughts, it is best to water the American mountain ash sporadically, as this species does not need a lot of water during colder months or dry spells.

The American mountain ash (Sorbus americana) typically does best in full sun and moderate shade, receiving at least 6 hours of direct sunlight a day with some afternoon shade. When planting, try to find a spot that has some protection from the hot afternoon sun. This allows the flowers and berries to have the exposure they need to get enough light but not so much that the foliage tends to fry. While some extra foliage shade can help with this, make sure the plant is getting plenty of direct light for the better part of the day.

Pruning American mountain ash (Sorbus americana) is best done in mid-spring, when the tree has flowered and the green leaves have sprouted out of the buds. Generally, about 1-third of the shoots can be removed from the canopy in a single season, and the lateral branches should not exceed 10 cm in length. It is important to be mindful of removing no more than 1/4 of live wood in order to maintain the tree's health and vigor. Additionally, dead or diseased wood should be completely removed, and care should be taken to avoid removal of all the shoots in just 1 area of the tree, as an uneven growth could be caused by doing so.