of the Tree?
You may wonder why people don’t simply paint the entire tree.
The vulnerable area is often the trunk, particularly sections exposed directly to intense sunlight. That’s why whitewashing is commonly concentrated around the lower trunk rather than covering the entire tree.
The exact approach depends on the tree species, climate, and reason for applying the coating.
Is Any White Paint Safe for Trees?
This is an important detail.
You shouldn’t simply grab any leftover paint and cover a tree with it. UC Integrated Pest Management guidance recommends white interior water-based latex paint diluted with an equal amount of water for susceptible trunks, rather than exterior or oil-based paint.
Applying the wrong product—or applying it incorrectly—can potentially cause problems, so tree-specific guidance is important.
An Old Practice With a Modern Purpose
Whitewashing trees is not a new idea. Historical accounts describe lime-based coatings being used on trees centuries
