I am about to go on holiday and can't get anyone to water my window boxes. If I bring them inside and put them in the bath, will they die for lack of sunlight?
An expensive option is to buy a electroic water timer and connect to the water supply with drip feeders and slenoid valves they run on 4mm black pipe and can be easly run to each window. If you use this option remember to trial it as it can take some time to regulate the right amount of water in each window box. You can buy the timers and watering kits from HomeBase of gardening suppliers made in Auz by Hardy Pope.