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Arborvitae, a popular evergreen shrub, is widely used in landscaping for privacy screens, hedges, and decorative accents. One of the key considerations when choosing arborvitae is its growth rate, which varies among different varieties. Understanding these differences helps gardeners and landscapers select the right type for their space and maintenance preferences.
What Are Arborvitae Growth Rates?
Growth rate refers to how quickly an arborvitae variety reaches its mature height and width. Some varieties grow rapidly, adding several inches per year, while others grow slowly, taking many years to reach full size. Knowing the growth rate helps in planning landscape designs and maintenance schedules.
Fast-Growing Arborvitae Varieties
Fast-growing arborvitae are ideal for quick privacy screens or rapid landscape transformation. They typically grow between 3 to 5 feet annually, making them suitable for those who want quick results. However, their rapid growth may require more frequent pruning and maintenance.
- Green Giant: One of the most popular fast-growing varieties, reaching up to 3 feet per year, and can attain heights of 30-50 feet.
- Emerald Green: Grows approximately 3 inches annually but can grow faster under optimal conditions, reaching 12-20 feet.
- American Arborvitae (Thuja occidentalis): Varies by cultivar but generally grows 2-3 feet per year.
Slow-Growing Arborvitae Varieties
Slow-growing arborvitae are suitable for smaller landscapes or for those preferring less maintenance. They typically grow less than 12 inches per year, allowing for more control over their size and shape. These varieties are often more dense and long-lasting.
- Hetz Midget: Grows about 2 inches per year, reaching around 3-4 feet in height.
- Little Giant: Slow growth rate, reaching approximately 4-6 feet over many years.
- Emerald Green (dwarf cultivars): Some dwarf cultivars grow very slowly, ideal for small spaces or container planting.
Factors Influencing Growth Rate
Several factors can affect how quickly arborvitae grow, including soil quality, sunlight, water availability, and climate conditions. Proper planting and ongoing care can promote healthy growth, whether fast or slow.
Soil and Water
Well-drained, fertile soil with adequate moisture encourages optimal growth. Overly wet or compacted soil may stunt growth or cause health issues.
Sunlight
Arborvitae thrive in full sun to partial shade. Insufficient sunlight can slow growth and reduce foliage density.
Choosing the Right Variety
Selecting between fast and slow-growing arborvitae depends on your landscape goals, maintenance capacity, and space. Fast-growing varieties are suitable for quick privacy but require regular pruning, while slow-growing types offer a more manageable size with less upkeep.
Conclusion
Understanding the growth rates of arborvitae varieties enables better planning and maintenance of your landscape. Whether you prefer rapid results or a slow, controlled growth, there is an arborvitae that fits your needs. Consider your space, desired appearance, and maintenance level when choosing the right variety for your garden.