How To
If you're wondering "how tall do Arborvitae Emerald Green grow", you're not alone—this classic evergreen can reach heights that surprise even seasoned gardeners. The 🌲 Emerald Green Arborvitae typically matures between 12 to 15 feet, but its growth rate depends on planting conditions, pruning habits, and your local climate in zones like 6a.
What makes this plant so popular is its predictable growth pattern, especially when planted in spring during its ideal window of April to May. In just three years, you’ll see it grow from a modest 2-3 feet to a sturdy 6-8 feet, making it a fast yet reliable addition to any landscape. The key to controlling its height lies in proper spacing—planting them 3-5 feet apart ensures they have room to develop without crowding.
But here’s the game-changer: pruning isn’t just about height control—it’s about shaping your 🌲 Emerald Green Arborvitae into the perfect focal point for your garden. Whether you want a tall, narrow hedge or a full, rounded shrub, timing and technique matter. I’ll show you exactly when to prune and how much to trim to keep your arborvitae looking its best while maintaining that lush, vibrant green color.
Ready to transform your yard? Let’s dive into the details—from growth rates to pruning timelines—so you can enjoy a healthy, beautiful 🌲 Emerald Green Arborvitae that fits your space perfectly.
Arborvitae Emerald Green mature height: growth rates by year and final dimensions
Understanding the 🌲 Emerald Green Arborvitae growth rate is key to planning your landscape. This evergreen typically reaches its mature height of 12-15 feet over 10 years, but its growth trajectory is fascinating. In the first year, you’ll see it grow 2-3 feet, while by year three, it’ll already be 6-8 feet tall—a rapid climb that makes it a favorite for quick privacy screens.
The width of an Emerald Green Arborvitae is almost as impressive as its height. While it grows 3-4 feet wide at maturity, its conical shape makes it perfect for narrow spaces. This means you can plant them just 3-5 feet apart for a dense, lush hedge without worrying about overcrowding. Proper spacing is critical—it prevents competition for nutrients and sunlight, which can stunt growth.
Climate plays a surprising role in how tall your 🌲 Emerald Green Arborvitae will grow. In USDA Zone 6a, where winters are colder, growth may slow slightly in the first few years, but the plant compensates by growing taller once established. In warmer zones, you might see 1-2 feet of growth per year during its peak years (years 3-7). This variability means your arborvitae could reach 15 feet in 8-10 years if conditions are ideal.
Here’s a quick comparison to put things into perspective: a 12-foot Emerald Green Arborvitae is roughly the height of a standard basketball hoop. That makes it perfect for marking the boundaries of your property or adding vertical interest to a garden bed. Its height also means it’s an excellent choice for windbreaks, providing both aesthetic appeal and functional benefits.
Now, let’s talk about how to control its height if you’re aiming for something shorter. Pruning is your best tool, but timing matters. The best time to prune is late winter or early spring, just before new growth begins. This ensures you don’t accidentally cut off next year’s buds. I’ll cover pruning techniques in detail later, but for now, know that never prune more than 1/3 of the plant’s height in a single year—this can stress the shrub and leave it vulnerable to pests or disease.
One common mistake gardeners make is planting 🌲 Emerald Green Arborvitae too close together. If you’re using them as a hedge, space them 3 feet apart for a tight, uniform look. For a more natural, woodland feel, space them 5 feet apart. This spacing gives each plant room to develop its full width while still creating a cohesive barrier. Overcrowding can lead to stunted growth and poor air circulation, which invites fungal issues.
Let’s break down the growth stages in a clear table so you can track your arborvitae’s progress year by year. This visual guide will help you set realistic expectations and plan your garden layout accordingly.
| Year | Height Range | Width Range | Growth Notes |
|---|---|---|---|
| 1 | 2-3 ft | 1-2 ft | Focus on root establishment; minimal pruning. |
| 2 | 4-6 ft | 2-3 ft | Rapid vertical growth; prune lightly to shape. |
| 3 | 6-8 ft | 3-4 ft | Begin shaping for final form; avoid heavy pruning. |
| 5 | 8-10 ft | 4-5 ft | Growth slows; maintain shape with light trims. |
| 10 | 12-15 ft | 5-6 ft | Mature height reached; minimal pruning needed. |
As you can see, the first few years are all about vertical growth, while the width catches up over time. By year 10, your 🌲 Emerald Green Arborvitae will have reached its full potential, offering both height and width for a stunning landscape feature. If you’re planting multiple shrubs, consider their final dimensions when designing your layout. For example, placing them 5 feet apart in a row will create a natural, flowing hedge that’s both functional and beautiful.
One pro tip:
Arborvitae Emerald Green mature height: growth rates by year and final dimensions
Your 🌲 Emerald Green Arborvitae will grow at a steady pace, reaching its mature height of 12-15 feet within about 10 years. This predictable growth makes it perfect for planning your landscape design. In the first year, expect a modest 2-3 feet of growth, while the second and third years will see more dramatic increases—4-6 feet and 6-8 feet respectively.
The final dimensions of your arborvitae depend on several factors, including spacing, climate, and pruning habits. In ideal conditions—like full sun and well-draining soil—your plant will reach its maximum height faster. However, in cooler climates or partial shade, growth may slow slightly, especially in the first 3-5 years.
Here’s a quick reference for how your 🌲 Emerald Green Arborvitae will grow over time:
| Stage | Height Range | Width Range | Notes |
|---|---|---|---|
| Year 1 | 2-3 ft | 1-2 ft | Focus on root establishment. |
| Year 2 | 4-6 ft | 2-3 ft | Rapid vertical growth begins. |
| Year 3 | 6-8 ft | 3-4 ft | Prune lightly to encourage width. |
| Year 5 | 8-10 ft | 4-5 ft | Ideal for privacy screens. |
| Mature (10+ years) | 12-15 ft | 5-7 ft | Full, lush appearance. |
When planning your landscape, consider the width of your 🌲 Emerald Green Arborvitae—it typically grows 3-4 feet wider than its height over time. This means spacing them 3-5 feet apart in a row will prevent overcrowding and allow for natural airflow, reducing disease risks.
If you’re aiming for a taller, narrower look, plant them closer together—3 feet apart—and prune regularly to encourage upward growth. For a wider, bushier appearance, space them 5 feet apart and focus on pruning the top to promote lateral branching.
One common mistake is assuming all 🌲 Emerald Green Arborvitae grow at the same rate. In cooler climates, like USDA Zone 6a, growth may slow slightly, especially in the first few years. To compensate, ensure your plants receive full sun exposure and well-draining soil to maximize their potential height.