Watering balls for controlled water release. Are you looking forward to a big trip or a long weekend away? If only you didn't have to worry about watering your floral friends. The 4 watering balls allow your potted plants to survive for up to 2 weeks without anyone needing to check on them. The approximately 20 cm long tube of the water dispenser ensures a measured watering. The watering balls also impress visually, as they are available in various color options.