From WikiAnswers The willow has tough roots which grow both underground and from aerial parts of the plant to obtain as much water as possible. read more
Willow trees are able to take root from cuttings or fallen branches. This increases their abundance The willow has tough roots which grow both underground and from aerial parts of the plant to obtain as much water as possible. read more
One adaptation that oak trees exhibit is very deep root systems, which help them find water. This is especially useful in a habitat that's prone to drought. The leaves of many oaks are thick and have small stomata, which reduces the rate of evaporation and water use. read more