These award winning 8cm/3” diameter growbag watering pots make an easy job out of watering growbags. The two little reservoirs sit below the polythene on the surface of the compost in between your tomato plants. Water can then be poured into the watering pots quickly easily & efficiently & it is then evenly distributed throughout the compost. Re-use year after year to get the best from your growbags. A simple but highly effective idea & available in sets of 2 (ideal for a single growbag) or 6.