Thuja occidentalis Anna’s Magic Ball® (American Arborvitae)

Thuja occidentalis Anna’s Magic Ball® is a charming, low-maintenance dwarf shrub, ideal for adding a splash of color to small gardens, containers, and borders. Its hardiness and compact form make it a popular choice among gardeners seeking a year-round ornamental plant.

Thuja occidentalis Anna’s Magic Ball®: An In-depth Look

Anna’s Magic Ball® is a dwarf variety of Arborvitae with a distinctive, spherical shape and bright, golden-yellow foliage. It’s a cultivar prized for its compact form and vibrant color.

Native: Thuja occidentalis is native to North America. It is predominantly found in the northeastern United States and southeastern Canada. This species naturally occurs in wet forests, swamps, and along lake shores, thriving in cool, moist, well-drained environments.

Plant Type and Habit: It is a dwarf, evergreen conifer with a naturally rounded, globe-like habit. This slow-growing shrub maintains its shape without the need for pruning.

Size: Anna’s Magic Ball® reaches a modest size, usually around 10-15 inches in height and width (25-37 cm), making it suitable for small spaces.

Foliage: The foliage is the main attraction, with bright yellow leaves that can turn a more golden hue in full sun. In winter, the foliage may acquire a bronze tint.

Bark: The bark is reddish-brown, relatively smooth, and becomes more textured with age.

Uses: Perfect for small gardens, rock gardens, borders, container plantings, and as an accent in mixed beds. Its small size and striking color make it a versatile choice.

Hardiness: Hardy in USDA zones 3-7, it can withstand cold winters and a range of environmental conditions.

Wildlife: Provides limited shelter for small wildlife.

Toxicity: Generally considered non-toxic to humans and animals.

Deer and Rabbit: May suffer some damage from deer and rabbits, especially in areas where these animals are prevalent.

Invasiveness: This cultivar is not considered invasive and typically stays within its planted boundaries.

Benefits: Its small size and striking coloration offer visual interest throughout the year. It’s easy to care for, requiring little maintenance, and is versatile for various landscape uses.

American Arborvitae Growing Tips

Light: Thrives in full sun but can also grow well in partial shade. Full sun exposure leads to denser foliage growth. Usually appreciates some light afternoon shade in hot summer climates. Protect from drying winds, especially when young.

Soil: Adaptable to a wide range of soils but prefers moist, well-drained, slightly acidic to neutral soil. Tolerates clay soils.

Water: Regular watering is important, especially for young plants and in dry conditions. Avoid extreme dry soil in the fall, which can cause the evergreen foliage to dry out in winter.

Fertilizer: Apply a balanced, slow-release fertilizer in early spring. Over-fertilization can harm the plant, so follow the recommended rates.

Pruning: Little to no pruning is required. Prune for shaping or size control in late winter or early spring before new growth starts. Avoid heavy pruning.

Mulch: Provide a generous root zone mulch.

Propagation: Propagated through semi-hardwood cuttings in late summer.

Pests and Diseases: Watch for bagworms, spider mites, mealybugs, and scale insects. Leaf tips may suffer damage from leaf miners. Canker can sometimes pose a problem. Fungal diseases like root rot can occur in poorly drained soils. Good air circulation and proper planting depth help prevent these issues.