American arborvitae

American arborvitae is a slow growing but hardy species of shrub. It requires regular watering to ensure healthy growth. In general, it should be watered once per week in the absence of rainfall. When watering, thoroughly soak the soil with at least 1-2 inches of water to ensure the water reaches the roots. Be careful not to overwater, as this can lead to root rot and other issues. Water the plant more often during hot, dry months and less often during cooler months. Additionally, if in a pot, check the moisture of the soil more often, as water evaporates more quickly from a pot than from the ground.

American arborvitae needs at least 6 hours of direct sunlight each day. These plants grow best in an area that gets full sun in the morning and filtered sun in the afternoon. In climates with very hot summers, some afternoon shade may be beneficial to keep the foliage from drying out. During the spring and summer months, direct sunlight is more beneficial, while in autumn and winter months, the filtered sunlight is preferred. American arborvitae should be planted in a spot that is sheltered from strong winds to protect the foliage from drying out.

American arborvitae should be pruned in late winter or early spring before new growth occurs. It is typically best to remove no more than 1-third of the plant's total growth in any 1 season. To achieve a desired shape or form, it is best to thin out and remove entire branches or stems. This includes removing dead or diseased branches. When removing lower branches, be sure to leave some foliage near the base of the plant to help protect it from sunscald.