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. 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 (commercial) and EarthBox (consumer), Ollie Plant Sipper (consumer), The Refuge Garden (www.urbanrefugegardening.com) (consumer/commercial) or as do-it-yourself projects made from plastic buckets and boxes.
- Sub-irrigated planter FAQ, from Planter Technology
- Planter Technology
- How To Make a Two Bucket Sub-Irrigated Planter
- Csizinszky, A.A. (1998). "The Potential For The Sequential Production Of Vegetables In The Field With The 'Earth Box' System". Acta Hortic. 513: 137–144. doi:10.17660/ActaHortic.1998.513.16. Retrieved 2016-12-01.
- industrial grade self watering containers for consumer market
- AlboPepper: SIPs (Sub-Irrigated Planters)
- Global Buckets: A nonprofit organization using sub-irrigated planters to reduce global hunger.
- Improved Alaska Grow Bucket DIY single bucket Sub-Irrigated Planter.
- Advantages of Sub-Irrigated Planters
- Earthtainer Open-SourceSub-Irrigated Planter Design
- How to make a self-watering planter for under $10
- High Altitude Gardening – SIPping
- Blake Whisenant, Inventor of the Earthbox, demonstrates how it works