21.5" Tapered Reservoir

Add a self watering reservoirs to window boxes, pots and planters, and ensure plants are always hydrated just the right amount. In container gardening a planter reservoir is an easy way to cut down on manual work while improving the health of roots. Each water reservoir insert featured below is its own self watering conversion kit that turns regular containers into nourishing plots for favorite arrangements.
A 21.5" planter reservoir irrigates window box planters up to 39.5" for approximately 2 weeks depending on climate and plants growing.
Even though it's just an insert, reservoirs are really self watering conversion kits for containers. Make any vessel a self watering planter with reservoir inserts designed to provide the perfect amount of water to root balls while leaving room for soil. A gravity fed capillary is at work between the water volume and soil volume, making each self watering reservoir a well of nutrients for plants to draw on as needed, irrigating for weeks at a time depending on climate and plants used. Shop our reservoir inserts and self watering conversion kits for thriving, beautiful container gardens.