How Big Your Full Grown Emerald Green Arborvitae Can Get
Thuja occidentalis
By the Greg Editorial Team
Jul 28, 2024•4 min read
This article was created with the help of AI so we can cover more plants for you. May contain errors. See one? Report it here.
- 🌳 Typical mature size: 10-15 feet tall, 3-4 feet spread.
- 🌱 Growth influenced by sunlight, soil, water, and care.
- ✂️ Prune early spring for shape and size control.
Mature Size Insights
📏 Expected Height and Spread
Emerald Green Arborvitae, known for its vibrant year-round color, typically reaches a mature height of 10 to 15 feet and a spread of 3 to 4 feet. This size makes it a popular choice for privacy hedges and ornamental landscaping.
🌱 Growth Rate Factors
Several factors influence the growth rate of Emerald Green Arborvitae:
- Sunlight: Prefers full sun but can tolerate light shade.
- Climate: Thrives in a range of climates, with optimal growth in zones 2 through 7.
- Soil Conditions: Adaptable to different soil types, provided they are well-drained.
- Fertilization: Responds well to balanced fertilizers, enhancing growth.
📐 Size Variability
Conditions leading to variations in the mature size of Emerald Green Arborvitae include:
- Spacing: Planting distance affects overall spread and density.
- Pruning: Regular trimming can maintain desired dimensions.
- Watering: Consistent moisture levels support steady growth.
- Age: Growth rate slows as the tree matures, impacting final size.
Growth Timeline
🌱 Reaching Full Height
Emerald Green Arborvitae shoots up at a brisk pace early on, gaining 1 to 2 feet each year. As it matures, the growth rate takes a leisurely turn, slowing to about 6 to 12 inches annually. Expect this evergreen to strut its full height of 10 to 15 feet, given time and the right conditions.
🚀 Factors Affecting Growth Speed
Several factors can either put the brakes on or hit the gas pedal for your Arborvitae's growth:
- Sunlight: Full sun to partial shade is their happy place. Too little light, and they'll grow at a snail's pace.
- Soil Conditions: They're not picky, but well-drained soil helps them thrive.
- Watering Practices: Consistent moisture is key, but avoid waterlogged roots.
- Fertilization: A balanced diet without overfeeding keeps them growing strong.
- Temperature: They favor the cool to mild range, around 60-75°F (15-24°C).
- Pruning: Regular trims aren't just for looks; they can also influence growth.
- Planting Location: Give them space to grow without competition from buildings or other plants.
Size Variants
🌱 Dwarf Cultivars
Dwarf cultivars of Emerald Green Arborvitae offer a compact option for gardeners with limited space. Unlike their full-sized counterparts, these miniatures fit snugly in cozy garden corners or as part of a low hedge. Here's how they measure up:
- Thuja occidentalis ‘Danica’: A true dwarf, reaching a modest 2 feet in both height and width.
- Other dwarf varieties: Generally, they range from 1 to 3 feet tall, perfect for small-scale landscapes or container gardening.
🌳 Larger Varieties
For those seeking grandeur and privacy, larger varieties of Arborvitae make a bold statement. Their towering presence can create lush green walls or majestic landscape features. Consider these giants:
- Thuja plicata x standishii ‘Green Giant’: Soars up to 60 feet, ideal for a fast-growing privacy screen.
- Western Red Cedar: Grows up to 40 feet, favored in the Pacific Northwest for its moderate growth and stately appearance.
Landscapers often choose these varieties for their ability to provide quick and effective screening, but it's essential to plan for the space they'll need to flourish.
Managing Plant Size
🌿 Pruning for Size Control
Pruning is key to maintaining your Emerald Green Arborvitae's size and shape. Here's how to do it right:
- Prune in early spring to encourage denser growth and maintain a neat appearance.
- Trim the leafy parts of the branches, avoiding cutting back to bare wood to prevent harm.
- Remove dead or diseased branches to prevent decay and promote better air circulation.
- For size control, prune the top and outer branches to manage height and width.
🌳 Environmental Influence
The environment plays a big role in the mature size of your Emerald Green Arborvitae. Optimize these conditions to control growth:
- Sunlight: Plant in full sun to partial shade. Aim for at least six hours of sun daily, but provide some shade in warmer climates to prevent foliage burn.
- Soil: Use moderately moist, well-drained soil. Ensure proper spacing when planting—about 3 to 4 feet apart—to improve air circulation and reduce disease risk.
- Water: Water thoroughly after planting and weekly once established. Mulch around the base, keeping it away from the stem to prevent rot.
- Spacing: Leave enough room between plants to accommodate their mature spread and avoid the need for drastic pruning later on.
⚠️ Safety First
This content is for general information and may contain errors, omissions, or outdated details. It is not medical, veterinary advice, or an endorsement of therapeutic claims.
Always consult a qualified healthcare professional before using any plant as food, medicine, or supplement.
Never eat any plant (or feed one to pets) without confirming its identity with at least two trusted sources.
If you suspect poisoning, call Poison Control (800) 222-1222, the Pet Poison Helpline (800) 213-6680, or your local emergency service immediately.
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