Growing tomatoes in growbags is undoubtedly the best way to grow them, but consistent watering can be a problem, particularly during hot weather Not any more &45; thanks to these handy collars. Simply place the collar around the young tomato plants at the time of planting. Each clear plastic collar will form a reservoir to reduce water run&45;off, ensuring that your plants are consistently fed & watered, & avoiding inconsistent cropping & damaged fruit