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Classic Container Irrigation System

CWI is planter technology's container irrigation solution designed to be dropped into most cylindrical and slightly tapered decorative containers, for both interior and exterior pots and planters. The CWI uses Planter Technology's proven vacuum-sensor technology to precisely monitor the soil moisture level, irrigating the plant only when the soil starts to dry. It allows for extended hand-watering intervals, typically 2 to 4 weeks for interior plants and 1 to 3 weeks for exterior plants, depending on the plant and the surrounding conditions.


Features of the Classic Container Irrigation System
  • Keeps plants healthy, strong and stress free by balancing moisture and oxygen levels in the soil at all times.
  • Integrated exterior drainage adaptor allows excess rainfall to overflow but prevents drainage of irrigation water during normal outdoor use.
  • Will not leak or sweat, prevents staining of terra-cotta containers.
  • Perfect solution for applications where drip irrigation doesn't work.
  • Large fill hole accommodates a garden hose for easy filling.




How The Container Irrigation System Works

The CWI resercoir is filled by hand every 2-3 weeks. The hole is closed with a stopper, creating a vacuum-tight closed reservoir.

When the soil is dry (indicating the plants and flowers need water), the moisture sensor allows air to pass through the tube into the reservoir, allowing water to flow into the container from a series of openings in the bottom of the planting area. The water wicks up through the soil, irrigating the plants.

As the soil becomes moist, the sensor (planted in the soil 1/3 to 1/2 -way down the container) absorbs water. When wet, it acts like a valve, blocking the flow of air through the tube. A vacuum is created above the reservoir, preventing further watering until the soil begins to dry.

The addition of an overflow drainage adaptor allows for use of CWI in exterior applications, and prevents the drainage of irrigation water during normal use.

Model Specifications

Model Overall Dim. Interior Dim. Overall Ht. Inside Ht. Water Capacity
CWI-R1100 12.5"/10.5" 11"/8" 13.25" 12" 2 gal
CWI-1300 14.5"/8.0" 13"/6.75" 13.5" 11.25" 1 gal
CWI-1500 16.5"/10.5" 15"/8.5" 15" 13.5" 2.25 gal
CWI-1800 20.75"/14.5" 18"/11.5" 19" 17" 6.0 gal
CWI-2100 23.25"/13.0" 20.5"/12" 21.5" 19" 9.0 gal
CWI-2400 26"/15" 24"/13" 21" 18.75" 8.0 gal
CWI-2500 27.25"/17.5" 24.5"/15" 24" 21.5" 12.8 gal
CWI-2800 31"/19" 28.5"/17" 26" 23" 15.0 gal
CWI-3300 35"/18.5" 32.5"/16" 27" 24" 18.0 gal


Landscape Professionals Serving The Central New Jersey Area
826 Route 202-206 North | Bridgewater NJ 08807 | 908-575-1236 | 908-575-3265 Fax






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