When it comes to watering plants in your grow box or raised bed many variables need to be considered. How and when you water your plants, as well as the quantity of water you give to your plants, would depend on the type of growing medium used, the type of crop you are growing, the time of year, and weather conditions. Important Functions Of Water in Plants One of the first things we need to answer is why plants require water. Plants require an adequate supply of water to grow successfully . Water has several functions in plants. The six main functions of water in plants are: 1. for photosynthesis 2. to keep plant cells turgid and keep the plant upright. 3. for growth (i.e. increase in height, development of new leaves and roots, etc.) 4. as a solvent for chemicals inside the plant 5. to keep plants cool 6. to transport dissolved substances throughout the plant How To Recognize When Plants Require Watering When there is not sufficient water available t...