Thuja occidentalis ‘Globosa Aurea’ (American Arborvitae)

Thuja occidentalis ‘Globosa Aurea’ is a delightful, low-growing evergreen shrub, perfect for adding a touch of bright color to the landscape. Its adaptability and easy-care nature make it a popular choice for various garden styles and purposes.

Thuja occidentalis ‘Globosa Aurea’: An In-depth Look

Thuja occidentalis ‘Globosa Aurea’ is a visually striking cultivar of the Eastern Arborvitae, known for its unique coloration and form. It stands out with its golden-yellow foliage that becomes brighter in the sun. It has a compact, rounded, or globe-shaped growth habit, making it a charming addition to any garden.

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 slow-growing evergreen conifer with a dwarf, globular growth pattern. This shrub is characterized by its dense and slow-growing nature.

Size: ‘Globosa Aurea’ is a dwarf variety, typically reaching about 2-4 feet in height and equally in width (60-120 cm). Its small stature makes it suitable for a variety of landscape uses.

Foliage: The foliage is the most striking feature, with its golden-yellow color that intensifies in full sun. The leaves are scale-like, tightly packed, and maintain their color throughout the year. The flat sprays of lacy, thread-like foliage are soft to the touch.

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

Uses: Ideal for rock gardens, border fronts, container plantings, and as an accent in mixed borders. Its bright color and compact size make it a popular choice for adding visual interest.

Hardiness: Hardy in USDA zones 4-8, 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: Offers year-round color and interest with its vibrant foliage. It is easy to maintain and suitable for a variety of uses in the landscape, especially in small gardens or as a decorative element.

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.