How big does American arborvitae get?

American arborvitae (Thuja occidentalis), also known as Eastern arborvitae, is a popular evergreen tree that can reach impressive heights if given the right conditions. In general, American arborvitae can grow to be quite large, with mature specimens often reaching 40 to 60 feet in height and spreading 10 to 15 feet wide. However, it’s important to note that the size of these trees can vary depending on various factors such as growing conditions, pruning practices, and the specific cultivar.

When it comes to growing American arborvitae, providing the right conditions is crucial for optimal growth. These trees prefer full sun to partial shade and thrive in well-drained soil that is slightly acidic. They are relatively low-maintenance and can tolerate a wide range of soil types, including clay and sandy soils.

It’s worth mentioning that the size of American arborvitae can also be influenced by pruning practices. Regular pruning can help maintain a more compact and manageable size, making it suitable for hedges or screens. However, if left unpruned, these trees can develop a more natural, conical shape as they mature, reaching their full height potential.

In my personal experience, I have seen American arborvitae trees that were planted in optimal conditions and left to grow naturally reach impressive heights of around 50 feet. These trees created a beautiful backdrop in the landscape, providing privacy and a sense of verticality.

However, it’s important to consider the space available in your landscape before planting American arborvitae. Given their potential size, these trees may not be suitable for smaller yards or tight spaces. It’s essential to plan ahead and give them enough room to grow without crowding other plants or structures.

American arborvitae can grow to be quite large, with mature trees reaching heights of 40 to 60 feet and spreading 10 to 15 feet wide. However, the size of these trees can be influenced by various factors such as growing conditions and pruning practices. Providing the right conditions and allowing for sufficient space is key to ensuring healthy growth and a visually appealing landscape.

Photo of author

Caroline Bates

Caroline is a Miami-based landscaper who specializes in drought-tolerant landscapes. She is the mother of two young children and also enjoys writing for GreenPacks.org in her spare time. Caroline takes great pride in her work, and loves being able to share her knowledge with others through her writing.