American boxwood and English boxwood are two popular cultivars of boxwood plants. While they have similarities, there are notable differences between the two.
1. Cold Tolerance: One major difference is their cold tolerance. Most American boxwood cultivars are known for their ability to withstand colder temperatures. They are cold-tolerant and can thrive in various regions across the United States. On the other hand, English boxwood, also known as Buxus sempervirens ‘Suffruticosa’, is less cold-tolerant and may not fare well in extremely cold climates.
2. Leaf Shape: Another noticeable difference lies in the shape of their leaves. American boxwood typically has long oval-shaped leaves with more pointed tips. The leaves are usually larger in size compared to English boxwood. In contrast, English boxwood has more oval-shaped leaves that are slightly smaller in size.
3. Growth Habit: American boxwood tends to have a more upright growth habit, with branches that grow more vertically. This makes it a suitable choice for hedges and topiaries, as it can be pruned and shaped easily. English boxwood, being a dwarf variety, has a dense growth habit and a compact form. It is commonly used for edging, borders, and low hedges.
4. Growth Rate: American boxwood generally has a faster growth rate compared to English boxwood. This means that American boxwood plants may require more frequent pruning to maintain their desired shape and size. English boxwood, being a slow-growing variety, requires less maintenance in terms of pruning.
5. Usage: Due to its larger size and faster growth rate, American boxwood is often preferred for larger landscaping projects and formal gardens. It can be used to create tall hedges or as a backdrop for other plants. English boxwood, on the other hand, is popular for smaller gardens or areas where a compact and neat appearance is desired. Its slow growth makes it easier to maintain in smaller spaces.
It’s important to note that English boxwood is technically a form of American boxwood, known as Buxus sempervirens ‘Suffruticosa’. Although it shares similarities with other American boxwood cultivars, it is often recognized as a distinct variety due to its dwarf form and unique characteristics.
American boxwood and English boxwood differ in terms of their cold tolerance, leaf shape, growth habit, growth rate, and usage. Understanding these differences can help gardeners and landscapers make informed decisions when choosing the right boxwood variety for their specific needs.
