How Far from a Wall Should a Tree be Planted?

Planting trees can be done for various reasons: to beautify outdoor spaces, provide shade, reduce noise pollution, and offer wildlife habitats. However, the positioning of a tree can significantly affect its growth and the surroundings it occupies. One common question new tree planters often ask is "How far from a wall should a tree be planted?"

Factors to consider

The answer to this question depends on several factors, including the tree's mature size, growth habit, type of roots, and the wall's construction material. For example, some trees such as palms and conifers have shallow roots that can spread over long distances, while others such as oak trees have more extensive roots that grow deep into the soil. It's essential to know these growth habits to avoid any issues that may arise.

Another significant factor to consider is the wall's material. A wall made of brick or concrete is less prone to damage from tree roots as it's less porous than drywall, plaster, or wood. The correct distance between the wall and the tree will significantly influence the tree's success and longevity while ensuring the wall remains intact.

Proper Distance to Plant Trees from Walls

The general rule of thumb is to leave a reasonable distance between the wall and the tree. This distance should be based on the tree's mature size, with tall trees generally requiring more space than dwarf varieties. It's recommended to plant small trees with a mature size of 30 feet or less at least six feet from the wall to prevent damage by the growing roots. Medium-sized trees, between 30 and 70 feet, should be planted ten feet away from the wall. Large trees with a mature height of over 70 feet should be planted 20 feet or more from the wall.

However, keep in mind that the above guidelines are only general recommendations. Some trees may require much farther distances to grow successfully and avoid damage from the structure. Therefore, it's advisable to research specific tree species' mature heights and growth habits before planting them near any walls.

The Impact of Trees on Walls

Trees that are too close to walls can cause significant damage to the structures, especially when the tree's roots become established. Some of the harm caused by trees include:

Cracking and heaving of foundation materials due to the pressure exerted by the tree's roots.

Damage to underground pipes and water sources as roots search for nutrients and moisture.

Fungal growth on the side of the building facing the tree, which can lead to rot damage or moisture issues.

Damage to the wall's masonry and plaster due to root growth, and it can be expensive to repair.

Therefore, positioning a tree far enough away from the wall is crucial for preventing such damage.

The Bottom Line

When planning to plant a tree near a wall, the distance between the two should not be taken lightly. Keep in mind the tree's mature size, the wall's material, and the tree's growth habit when determining the distance to prevent any damage. It's essential to research specific tree species before planting them near walls and seek professional planting advice when in doubt. Remember, planting the tree in the right location will benefit both the tree and your property for years to come.