Sumi Soaker · Overhead irrigation for market gardens

Your beds are rectangles. So is the spray.

Sumi Soaker (Sumisansui) lays down a wide, even rectangle of spray from one line — gentle enough for fresh seedings, quick to move between blocks. Made in Japan by Sumika Agritech.

4.9 out of 5 from 61 Sumi Soaker reviews
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Sumi Soaker Riser Clamp - Modern Grower One line · up to 33 ft of coverage
  • 33 ft Spray width from a single line
  • 8 beds 30 in beds watered from one line down the path
  • 0.47 in/hr Gentle, rain-like application rate
  • 15–30 PSI Runs on most farm and residential supplies

R-Wide at rated pressure. Source: Sumika Agritech manufacturer specifications.

Pick your tubing

R-Wide or Mark II?

It comes down to three things: your water pressure, how much flow your source delivers, and where you grow. Parts come in a version for each tubing and don't cross over.

R-Wide

Open-field workhorse

Low, wide spray. One line down the center path covers eight 30 in beds.

Spray width
33 ft
Pressure
30 PSI rated · 15 PSI min
Flow, 100 ft line
12.7 GPM
On a garden hose
Up to about 50 ft lines
Choose it if:

you water open field beds, have good pressure and flow, and grow mostly low crops like greens, roots and alliums.

Mark II

Low-pressure specialist

Steep 80° spray that throws up and over taller crops in a tighter footprint.

Spray width
13 ft
Pressure
12 PSI rated · 3 PSI min
Flow, 100 ft line
3.6 GPM
On a garden hose
Any length, almost any hose
Choose it if:

you grow in a greenhouse or high tunnel, have low pressure or limited flow, or water around taller crops.

Not sure what your water can handle?

Time how long your hose takes to fill a 5-gallon bucket. The Water Supply Check turns that into a recommendation; the System Planner sizes your tubing and fittings.

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