Thuja occidentalis 'Smaragd'Emerald Green Arborvitae

The Thuja occidentalis 'Smaragd', or Emerald Green Arborvitae, is a popular evergreen conifer known for its dense, conical growth habit and vibrant green foliage that maintains its colour year-round. Growing up to 3 to 5 metres tall and 1 to 1.5 metres wide, this low-maintenance tree is ideal for hedging, screening, or as a vertical accent in garden beds and landscapes. Its slow to moderate growth rate makes it easy to maintain, requiring minimal pruning.

Hardy and versatile, the Emerald Green Arborvitae is a perfect choice for formal gardens, privacy screens, or as a feature plant in temperate regions.

Specifications

• Height3 to 5 metres
• Width1 to 1.5 metres
• Native toNorth America
• FoliageDense, vibrant green, scale-like leaves; evergreen
• Growth rateSlow to moderate

Conditions

• SoilPrefers well-drained, fertile soils; tolerates sandy, loamy, and clay types
• LightFull sun to partial shade
• WaterModerate; ensure consistent moisture during establishment
• ClimateThrives in temperate and cool climates

Additional Features

• FormNarrow, conical shape with a naturally symmetrical growth habit
• UsesIdeal for privacy screens, windbreaks, hedging, or vertical accents
• SpacingPlant 0.6 to 1 metre apart for hedges or 2 to 3 metres apart for individual features
• Low MaintenanceMinimal pruning required; shape lightly if necessary
• Pest ResistanceGenerally pest-free and hardy
• Drought TolerancePerforms well once established but benefits from supplemental watering in dry spells
• Seasonal AppealEvergreen foliage provides year-round colour and structure
• Cold HardyTolerates freezing temperatures and harsh winters
• VersatilityComplements formal, modern, and cottage garden styles

The Emerald Green Arborvitae is a resilient and elegant tree, perfect for creating privacy, structure, and a touch of year-round greenery in gardens and landscapes.