garden grass green hose irrigate irrigation lawn plastic sprinkler summer water wet yellow beans develop earth grow growth leaves mature plant seedlings Soil vegetable watered young arable barley crop crops farm field hill oats spray sunlight tractor wheat lettuce row rows butt cultivate glass greenhouse ground growing heat horticulture metal planting shelter tomatoes warm barrel black collect drought lid pipe rain rainfall save stand storage store tap Drakensberg mountain South Africa fire firefighting hoses conservation faucet gardening objects watering