How To
Wondering how tall do Arborvitae Emerald Green grow before they become a towering presence in your yard? This evergreen beauty typically reaches 12 to 15 feet at maturity, making it a perfect fit for privacy screens or foundation plantings—but only if you plan ahead.
The 🌲 Arborvitae Emerald Green grows at a steady pace of 12 to 24 inches per year, so you can expect noticeable height gains every season. Whether you're planting in USDA Zone 6a or a similar climate, spacing these shrubs 3 to 4 feet apart gives them room to thrive without crowding.
If you're dreaming of a lush, low-maintenance hedge, this variety delivers—just be prepared for its eventual height. The good news? With proper pruning and care, you can shape it to fit your space perfectly while keeping it healthy for years.
Let’s break down exactly what to expect from this classic evergreen, from growth rates to pruning tips, so you can create the landscape of your dreams without any surprises.
Arborvitae Emerald Green mature height: growth rate and expected dimensions
When planning your landscape, knowing the mature height of Arborvitae Emerald Green is essential. This popular evergreen typically reaches 12 to 15 feet tall at full maturity, creating a lush, dense screen perfect for privacy or foundation plantings. Unlike faster-growing varieties, Emerald Green grows at a steady pace, making it easier to predict its long-term size.
The growth rate of Arborvitae Emerald Green averages 12 to 24 inches per year, depending on soil quality, sunlight, and care. In ideal conditions—like full sun exposure and well-draining soil—you can expect even faster growth, while cooler climates may slow it slightly. This predictable growth pattern helps you plan spacing and maintenance from day one.
For a privacy screen, planting Arborvitae Emerald Green 3 to 4 feet apart gives each shrub enough room to develop its natural width of 3 to 5 feet. This spacing ensures they fill in quickly without competing for nutrients or light. If you're using them as a foundation planting, consider spacing them 5 to 6 feet apart to maintain a more refined look.
🌲 Did You Know? Emerald Green’s height is often compared to a standard basketball hoop, which stands at about 10 feet. At maturity, these shrubs will easily surpass that height, making them ideal for blocking views or adding vertical interest to your yard.
| Growth Stage | Height Range | Width Range | Spacing Recommendation |
|---|---|---|---|
| Year 1 | 2-3 ft | 1-2 ft | N/A (Plant individually) |
| Year 3 | 6-9 ft | 2-3 ft | 3-4 ft apart |
| Mature (5+ years) | 12-15 ft | 3-5 ft | 4-6 ft apart |
One common question is whether Arborvitae Emerald Green stays compact like its dwarf cousins. While it’s not a dwarf variety, it grows more slowly than the Green Giant Arborvitae, which can reach 30 to 40 feet tall. If you’re concerned about height, consider the Emerald Green Compact cultivar, which tops out at 6 to 8 feet—perfect for smaller spaces or container gardening.
To ensure your Emerald Green reaches its full potential, plant it in well-draining soil with a slightly acidic pH (6.0-7.0). Amend heavy clay soil with compost to improve drainage, as soggy roots can stunt growth. Mulching around the base with 2-3 inches of organic mulch helps retain moisture and regulate soil temperature, encouraging steady growth.
If you’re planting multiple shrubs for a hedge or screen, aim for a 5-foot spacing between rows to allow for future pruning and airflow. This spacing also makes it easier to maintain the shrubs’ shape and prevent disease. With proper care, your Emerald Green will grow into a dense, evergreen privacy barrier that lasts for decades.
For those in USDA Zone 6a or colder, Emerald Green is hardy down to -20°F, making it a reliable choice for northern climates. In warmer zones, it thrives just as well, though growth may slow slightly during heatwaves. Regular watering during the first 1-2 years helps establish a strong root system, ensuring long-term stability and height.
Whether you’re using these shrubs as a windbreak, privacy screen, or landscape accent, understanding their growth habits lets you plan with confidence. With its predictable height and low-maintenance nature, Arborvitae Emerald Green is a top choice for homeowners who want beauty without the hassle.
Pruning Arborvitae Emerald Green for height control: best practices and timeline
Pruning your Arborvitae Emerald Green is the key to controlling its height while maintaining a neat, dense shape. Unlike some shrubs, these evergreens respond best to light, regular pruning rather than heavy cuts. The goal is to shape them gradually—never removing more than 25% of the foliage in a single session—to avoid stressing the plant. I’ve found that pruning in late winter or early spring (just before new growth begins) yields the best results, as it encourages healthy, bushy growth for the season.
When pruning for height control, focus on trimming the top 1/3 of the new growth each year. This encourages branching lower on the shrub, creating a fuller, more compact look. Use sharp, clean pruners to make cuts just above a leaf node or bud, which helps direct new growth in the direction you want. Avoid cutting into old wood, as arborvitae struggle to regenerate from these areas, leading to bald spots or dieback.
⚠️ Warning: Over-pruning can weaken your Arborvitae Emerald Green, making it susceptible to pests like spider mites or diseases such as root rot. If you accidentally prune too much, don’t panic—simply reduce pruning frequency in the following year and focus on watering and fertilizing to help the shrub recover. Always step back and assess the shape before making cuts; a little patience goes a long way in maintaining a healthy plant.
- Pruning in late summer or fall: New growth won’t harden off before winter, increasing frost damage risk.
- Using dull or dirty tools: Rags or jagged cuts can invite disease. Always sterilize pruners with rubbing alcohol.
- Shearing too aggressively: Arborvitae hate heavy shearing—stick to 1/3 of new growth per year.
- Ignoring lower branches: Let sunlight reach the base to encourage fuller growth from the ground up.
For a structured pruning timeline, here’s what I recommend for the first 5 years of growth:
- Year 1: Light shaping to establish form; avoid heavy cuts.
- Year 2-3: Trim tips to encourage branching; focus on height control.
- Year 4-5: Refine shape and remove any crossing or dead branches.
After year 5, minimal pruning is needed unless you’re maintaining a specific height or shape. If you’re growing Emerald Green as a hedge or screen, prune twice a year: once in late winter and again in early summer to maintain density.
To keep your shrubs looking their best, invest in a pair of bypass pruners for clean cuts and a handheld hedge trimmer for shaping. For taller shrubs, a pole pruner makes reaching the top easier without a ladder. Always prune on a dry, calm day to reduce stress on the plant. After pruning, water thoroughly to help the shrub recover and promote new growth.
One of my favorite tips for maintaining height is to prune in stages. For example, if you want to keep your Emerald Green at 8 feet tall, trim the top 6 inches over 3 years rather than cutting it all at once. This gradual approach keeps the shrub healthy while achieving your desired height. With consistent care, your Arborvitae Emerald Green will stay lush, vibrant, and perfectly proportioned for years to come.
Remember, the goal isn’t just to control height—it’s to create a balanced, healthy shrub that enhances your landscape. Whether you’re pruning for a privacy screen, foundation planting, or simply to keep it from outgrowing its space, a little attention now will save you from major pruning headaches later. Happy pruning!