How much space does a tree of heaven take up?

A tree of heaven (Ailanthus altissima) can take up considerable space as it typically grows to a height of 40 to 60 feet and has a spread of 30 to 50 feet. Its extensive root system can also create competition with nearby plants for resources. Additionally, the tree’s aggressive growth and ability to produce numerous seeds allow it to spread quickly, often leading to dense thickets that can dominate an area.