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Ornamental Tree · Easy

How to Grow Emerald Green Arborvitae

Thuja occidentalis 'Smaragd'

Your complete guide to growing Emerald Green Arborvitae.

☀SunFull sun to partial shade (4-6+ hours)
💧WaterHigh — consistent moisture needed
🗺Zones3–7
📏Height40-60 feet
Emerald Green Arborvitae📷 Wikimedia Commons

When to Plant Emerald Green Arborvitae

Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.

ZoneStart IndoorsDirect SowHarvest
Zone 3 — — —
Zone 4 — — —
Zone 5 — — —
Zone 6 — — —
Zone 7 — — —

Companion Plants for Emerald Green Arborvitae

✓ Good companions

Astilbe

Enjoys similar moisture conditions and partial shade, adds colorful blooms

Caladium

Benefits from wind protection and partial shade provided by arborvitae

Ferns

Natural woodland companions that thrive in similar acidic, moist soil conditions

Heuchera

Tolerates shade and provides attractive ground cover with colorful foliage

Hosta

Thrives in partial shade created by arborvitae, complementary foliage textures

Impatiens

Thrives in the filtered light and wind protection of arborvitae canopy

Pachysandra

Excellent evergreen ground cover that prevents weeds and retains soil moisture

Rhododendron

Both prefer acidic soil and similar moisture levels, creates layered landscape

✗ Keep away from

Black Walnut

Produces juglone toxin that can stunt or kill arborvitae and other sensitive plants

Eucalyptus

Allelopathic properties inhibit growth of nearby plants including evergreens

Large Maple Trees

Aggressive root system competes heavily for water and nutrients

Notes from the garden

A greener inbox, occasionally.

Seasonal planting ideas, useful tips and a little inspiration. No weeds.