Sub-irrigated planter

Sub-Irrigated Planter
Diagram of a Two-liter bottle recycled into a sub-irrigated planter

Sub-irrigated planter (SIP) is a generic name for a special type of planting box used in container gardening and commercial landscaping. A SIP is any method of watering plants where the water is introduced from the bottom, allowing the water to soak upwards to the plant through capillary action.[1] It is possible to automate the watering and thus SIPs are popular with professional landscapers in buildings or urban settings. SIPs are available as products, under brand names such as Planter Technology[2] (commercial) and EarthBox[3] (consumer), Ollie Plant Sipper[4] (consumer), The Refuge Garden ( (consumer/commercial) or as do-it-yourself projects made from plastic buckets and boxes.[5]

One of the disadvantages of closed systems like Earth Boxes and SIPs is that soluble salts cannot be flushed into the lower soil profile and build up over time.[6]

See also


How to make a DIY Two Bucket Sub-Irrigated Planter

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