Thuja orientalis ‘Nana Aurea’ (Oriental Arborvitae)

Thuja orientalis ‘Nana Aurea’ is a charming, 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 orientalis ‘Nana Aurea’: An In-depth Look

Thuja orientalis ‘Nana Aurea’, also known as Oriental Arborvitae ‘Nana Aurea’, is a distinct and ornamental conifer valued for its colorful foliage and compact growth. ‘Nana Aurea’ is notable for its bright golden-yellow foliage, which adds a vibrant splash of color to the landscape. This cultivar has a compact, globular growth habit and maintains a neat appearance throughout the year.

Native: Thuja orientalis, the species to which ‘Nana Aurea’ belongs, is native to eastern Asia, particularly China and Korea.

Plant Type and Habit: It is an evergreen conifer with a dwarf, rounded growth habit. This cultivar is known for its slow-growing nature and dense foliage.

Size: ‘Nana Aurea’ is a small cultivar, typically reaching about 2-5 feet in height (60-150 cm) and 2-4 feet in width (60-120 cm). Its diminutive size makes it ideal for small gardens and limited spaces.

Foliage: The foliage is its most striking feature, with bright golden-yellow leaves that retain their color throughout the seasons.

Bark: The bark is grayish-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 colorful foliage and compact size make it a popular choice for adding visual interest.

Award: Recipient of the prestigious Award of Garden Merit of the Royal Horticultural Society.

Hardiness: Hardy in USDA zones 6-9, it can adapt to a range of environmental conditions but prefers milder climates.

Wildlife: Provides limited shelter for small wildlife.

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

Deer and Rabbit: May experience some browsing from deer and rabbits.

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, particularly in small gardens or as a decorative element.

Oriental Arborvitae Growing Tips

Light: Thrives in full sun but can grow well in light shade. Full sun exposure leads to denser foliage growth. Usually, it appreciates some light afternoon shade in hot summer climates.

Soil: Prefers well-drained, moist soil. It tolerates a variety of soil types, including clay, but does best in slightly acidic to neutral soil.

Water: Regular watering is important, especially in dry conditions and for newly planted trees.

Fertilizer: Apply a balanced, slow-release fertilizer in early spring. Avoid over-fertilizing, which can harm the plant.

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 into old wood.

Mulch: Provide a generous root zone mulch.

Propagation: Commonly propagated by semi-hardwood cuttings in summer.

Pests and Diseases: Watch for bagworms and spider mites. Aphids, mealybugs, scale insects, caterpillars, and borers may occur. Fungal diseases like root rot can occur in poorly drained soils. Good air circulation and proper planting depth help prevent these issues.