Canadian hemlock

Watering Canadian hemlock (Tsuga canadensis 'Gracilis') should be done 1-2 times a week to keep soil moist, not soggy. In most cases, when soil is allowed to dry out before watering, this type of plant does best. During times of extremely hot, dry weather, water more than twice a week if needed to keep the soil from drying out. It can be helpful to check the soil with your fingers to ensure it is moist and not dry before deciding whether to water. Soil that is kept consistently moist can lead to root rot; so it's important to avoid overwatering.

Canadian hemlock (Tsuga canadensis 'Gracilis') thrives best when planted in full sun, but will tolerate partial shade. The amount of sunlight needed depends on the location, but generally this species needs 6-8 hours of direct sunlight a day. In areas receiving more direct sunlight, up to 8 hours a day is optimal. In areas subject to partial shade, up to 4 hours may be enough. It is also important to take into account the season, as some areas receive longer days during the summer. During the summer, direct sun for more hours is recommended, but during the winter, light shade or dappled sunlight is often suitable.

Canadian hemlocks (Tsuga canadensis 'Gracilis') typically need to be pruned twice a year – once in late winter and once in early summer. Pruning in late winter can help shape and control the size and growth of the plant. Removing dead or diseased branches, crossing branches, or large, heavy branches that could lead to breakage can be done while the plant is dormant. During early summer pruning, thinning of the plant may be done to remove congested branches and increase air circulation and light penetration. Typically, no more than 1-third of the upper and lower canopy should be removed. Pruning at this time can also help reduce risk of fungal diseases and pests.