Willow is a plant with strong adaptability and regeneration ability. However, if the crown of willow is completely cut off, it needs to grow back through the accumulation of nutrients and the development of new branches. Therefore, the time for the willow to grow back after the crown is broken depends on many factors, such as the remaining trunk, the integrity of the root system, environmental conditions, climate season and so on. Under normal circumstances, if the root system of willow is not destroyed, the cut crown is not particularly large, and it will take several years to grow a complete crown again.
In order to promote the growth of willow more quickly, the following measures can be taken: watering regularly, fertilizing, pruning the remaining branches, giving proper shade and protection, etc. At the same time, in the cutting operation, the trunk and branches of willow should be preserved as much as possible to reduce the damage to willow and help it recover faster.