What are the disadvantages of Thuja Green Giant?

The Thuja Green Giant, also known as the Green Giant Arborvitae, is a popular choice for homeowners and landscapers alike due to its many advantages. However, like any plant, it does have some disadvantages to consider before planting.

1. Large Size: One potential drawback of the Thuja Green Giant is its size. While its rapid growth rate is often seen as a positive trait, reaching heights of up to 60 feet and widths of up to 20 feet can be problematic for smaller yards or urban areas with limited space. It is important to consider the mature size of the tree and ensure it has enough room to grow without causing issues with neighboring structures or plants.

2. Maintenance: While the Thuja Green Giant is generally low-maintenance, it still requires some care. Regular pruning is necessary to maintain its shape and prevent it from becoming too dense, especially if you want to use it as a hedge or screen. Additionally, its fast growth rate means more frequent pruning may be required compared to slower-growing evergreen varieties.

3. Potential for Limb Breakage: Due to its fast growth and dense foliage, the Thuja Green Giant can be prone to limb breakage, particularly during storms or heavy snowfall. It is important to regularly inspect the tree for any weak or damaged branches and remove them to prevent potential hazards.

4. Susceptibility to Pests: While the Thuja Green Giant is generally resistant to pests and diseases, it is not completely immune. The most common pest problems associated with this tree are bagworms and scale insects. Regularly inspecting the tree for signs of infestation, such as webbing or scale insects on the foliage, and taking appropriate measures such as applying insecticides or removing infested branches can help mitigate these issues.

5. Potential for Overcrowding: The Thuja Green Giant’s fast growth rate and dense foliage can sometimes lead to overcrowding if not properly spaced when planted. This can result in limited airflow and sunlight penetration, which may increase the risk of disease and pest infestations. Ensuring adequate spacing between trees when planting can help prevent this issue.

6. Allergic Reactions: While rare, some individuals may have allergic reactions to the pollen or foliage of the Thuja Green Giant. If you or anyone in your household has known allergies to evergreen trees, it is important to consider this potential risk before planting.

While the Thuja Green Giant offers many benefits such as rapid growth, natural pest resistance, and attractive foliage, it is important to consider its potential disadvantages. These include its large size, maintenance requirements, susceptibility to limb breakage, potential for pest infestation, risk of overcrowding, and the possibility of allergic reactions. By being aware of these factors and taking appropriate measures, you can enjoy the beauty and benefits of the Thuja Green Giant while minimizing any potential drawbacks.

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.