American arborvitae

American arborvitae requires consistent watering during the warmer growing season - typically from spring to fall - in order to stay healthy and develop strong root systems. During this period, water the plant every 7 to 10 days, making sure to moisten the soil 2-3 inches below the surface. During the winter, water your arborvitae when the top 1-2 inches of soil feels dry to the touch. Never allow the soil to dry out completely, as this can cause stress and stunt growth.

American arborvitae requires full sun for best growth and foliage color. It should be placed in an area that receives 6 to 8 hours of direct sunlight per day. This species can tolerate partial shade but will not grow as well and will not have as vibrant of a growth habit and color in such conditions. Additionally, the foliage color of American arborvitae will not be as deep if exposed to too much or too little sun. Too little sun will cause the foliage to become lighter in color while too much sun can cause leaf scorching.

American arborvitae (Thuja occidentalis 'Tiny Tim') should be pruned yearly in late winter to early spring. When pruning, the goal is to slightly reduce the size of the plant and encourage natural density and growth, so only remove enough foliage to accomplish this. Vigorous growth may require more frequent pruning to maintain the desired size and shape. Prune off dead branches and any branches that cross, rubbing or appear diseased. If the plant is misshapen, prune off some of the longer branches. Avoid cutting branches too close to the trunk, as this can cause damage.