With all the hot, dry weather we’ve had of late, watering plants becomes necessary. Water is a critical requirement for all plants, and they need a lot of it. Pulling water in from the soil through the roots is not only how plants get water, but also how they obtain the nutrients they need to grow, which is dissolved and suspended in soil water. Each day they take in a great deal of water through their roots, sift out the nutrients, and then release it as vapor through their leaves in a process called transpiration. Forests, being made up of a lot of really big plants standing shoulder to shoulder, account for some of the high humidity we experience each summer through this process. A mature maple tree can take up enough water to fill three bathtubs per day.