Tree whitening is a common practice for tree protection, typically conducted in autumn and winter. In recent years, it has become increasingly prevalent in urban gardens, including roadside trees and parks. Not only does it enhance the beauty of urban roads but also safeguards the trees. Truly, it accomplishes two goals at once.
1. Pest Control
Pests generally dislike white and clean areas. Thus, after the tree trunks are whitened, pests are reluctant to climb up and cause trouble.
2. Sterilization
When the trunks are whitened, some wounds can be covered, preventing further invasion of pathogens and reducing the occurrence of branch diseases.
3. Anti-Freezing
After the trunks are whitened, it reduces the day-night temperature difference. It is akin to putting a layer of “clothes” on the trees, creating an insulating layer and thereby increasing the trees’ cold and frost resistance.
4. Anti-Sunburn
The whitening agent can reflect sunlight, reducing the heat absorbed by the trunks and the day-night temperature difference. This prevents the trunks from freezing and cracking due to rapid temperature changes. At the same time, it can also delay the budding and flowering period of fruit trees and protect them from early spring frost damage.
5. Night Driving Safety
When trees are painted white, they reflect light, enabling pedestrians and vehicles at night to see the road more clearly and reducing safety hazards.