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Specification | Installation

Rain Bird’s Root Watering System (RWSM) enables vital water, oxygen, and nutrients to bypass compacted soil and directly reach tree and shrub root systems.

Its patented basket weave canister allows ground installation to a depth of 18" (45,7 cm). The RWSM is intended for use with water dispensing devices such as a bubbler head or a drip emitter.

The RWS promotes tree and shrub investment protection, watering efficiency and landscape aesthetics through deep root growth and tree development


Product Benefits

  • Investment Protection - Deep and broad roots yield transplantation survivability, stability in high winds, fast and healthy growth
  • Watering Efficiency - Subsurface irrigation minimizes run-off and evaporation
  • Landscape Aesthetics - Installs at grade and helps minimize damage to hardscapes

Product Features

  • Subsurface aeration and irrigation prevents tree and shrub transplant shock
  • Highest efficiency solution for tree irrigation - up to 95% emission uniformity with minimal wind, evaporation, or edge control losses
  • Aesthetically designed subsurface bubbler contributes to a landscape’s natural appearance
  • Locking grate at grade deters vandals
  • Helps prevent shallow root growth and hardscape damage
  • Aesthetically attractive below grade installation
  • Self-contained and factory assembled units for assured reliability

Technical Specifications

  • 4" (10.2 cm) retaining cap and vandal resistant locking grate tops a18" (45.7 cm) semi-rigid mesh tube
  • Factory installed ½" spiral barb elbow with a 1401 or 1402 bubbler makes connecting to lateral lines easy
  • Options: Check valve to keep lines from draining and sand sock for use in fine soils; Purple grate cover for non-potable water sources


  • 4" diameter x 18" length (10,2 cm x 45,7 cm)
  • 1/2”(15/21) M NPT inlet

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