Sumi Soaker overhead irrigation
Overhead mist tubing that waters in rectangles, not circles. Lay one line down the path and it covers the bed block beside it, gently enough for fresh seedings.
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 workhorseLow, wide spray. One line down the center path covers eight 30 in beds.
- Spray width
- 33 ft
- Pressure
- 30 PSI rated Β· 15 PSI min
- Flow, 100 ft line
- 12.7 GPM
- On a garden hose
- Up to about 50 ft lines
you water open field beds, have good pressure and flow, and grow mostly low crops like greens, roots and alliums.
Mark II
Low-pressure specialistSteep 80Β° spray that throws up and over taller crops in a tighter footprint.
- Spray width
- 13 ft
- Pressure
- 12 PSI rated Β· 3 PSI min
- Flow, 100 ft line
- 3.6 GPM
- On a garden hose
- Any length, almost any hose
you grow in a greenhouse or high tunnel, have low pressure or limited flow, or water around taller crops.
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.
Three pieces, every time
Kits
Start here. Tubing in 25, 50, 100 or 328 ft, plus the parts to run one line.
Water connectors
Required unless you DIY your own connection. Pick one to match how you feed the line. Available with or without a pressure regulator.
Extra runs & parts
Cutting a roll into more beds, joining two lines, or replacing a part.
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Sumi Soaker Irrigation Bed Add-On KitEverything for one more run, no tubingR-Wide & Mark II versions $14.50
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Sumi Soaker Tube End StopperCloses the far end of a lineR-Wide & Mark II versions $4.50
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Sumi Soaker Fabric Filter80 mesh, keeps the spray holes clearR-Wide & Mark II versions $4.50
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Sumi Soaker Tube Starter ConnectorFeeds water into the tubeR-Wide & Mark II versions $5.50
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Sumi Soaker 1-inch Threaded ConnectorAdapts the starter's BSPT threads to NPTFits both tubings $4.50
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Sumi Soaker Tube CouplingJoins two lengths or repairs a cutR-Wide & Mark II versions From $4.65
Risers
Lift the line above taller crops so the spray clears the canopy.
Tubing only
Replacement or extra tubing when you already have the parts.
Before you order
Questions? hello@moderngrower.co Β· 877-850-1555
What's the difference between a kit and tubing only?
A kit includes the tubing plus the starter connector, filter, end stopper and threaded connector to run it. Tubing only is for replacing or extending a line when you already have the parts.
Do I need a water connector?
Yes, unless you make your own connections. Kits don't include one. Choose the Garden Hose Connector or the Mainline Connector. The version with a pressure regulator holds the pressure the tubing is rated for.
Do R-Wide parts fit Mark II?
No. Starter connectors, couplings, end stoppers and filters come in an R-Wide and a Mark II version. Choose the version that matches the tubing you're running.
I'm cutting a long roll into several beds. What else do I need?
One Add-on Kit for each extra run. Your kit covers the first run.
About Sumisansui Sumi Soaker irrigation
The Sumisansui Sumi Soaker is a Japanese-engineered irrigation system designed specifically for market gardeners, nurseries, and small-scale farms.
Unlike traditional sprinklers that create dry spots and uneven coverage, the Sumi Soaker delivers a soft, uniform rectangular spray pattern that matches your bed layout β giving every plant the right amount of water with very little waste.
Made from UV-stabilized polyethylene with a 21-mil wall thickness, these systems are built to last 10+ seasons in real field conditions. Each 328-foot roll can be cut to any length, so you can customize your setup to fit beds of any size. No complex plumbing and no expensive infrastructure β connect to your water source and grow.
Which model is right for you: R-Wide or Mark II?
We carry two models, and choosing between them comes down to three things: the water pressure you have, the water volume (flow) your source can deliver, and where you're growing.
The Sumi Soaker R-Wide is the open-field workhorse. It operates at up to 30 PSI and sprays a low, wide pattern up to 33 feet across β enough to cover eight 30-inch beds from a single line down the center path. That reach means fewer irrigation lines and less hardware on large blocks. The trade-off is that it needs real pressure (roughly 15β30 PSI at the bed) and a healthy flow rate of about 12.7 GPM per 100 feet, so it's best suited to farms with a strong water supply.
Choose the R-Wide if you're irrigating open field beds, have good pressure and flow, want maximum coverage from fewer lines, and grow mostly low-profile crops like greens, roots, and alliums.
The Sumi Soaker Mark II is the low-pressure specialist. It runs at just 11.6 PSI β and will operate on as little as 3 PSI β with a steeper 80Β° spray angle that throws water up and over rather than wide. It covers about 13 feet and sips water at roughly 3.6 GPM per 100 feet, so it runs comfortably off a garden hose at almost any length, or off a gravity-fed tank. The steeper angle and tighter footprint make it the right choice in confined spaces and for watering around taller, established crops.
Choose the Mark II if you're growing in a greenhouse or high tunnel, have low water pressure or limited flow, or need to irrigate around taller crops.
Both models deliver gentle, rainfall-like coverage that won't wash out freshly seeded beds or damage delicate transplants. If you're not sure which fits your setup, the Water Supply Check helps you measure your pressure and flow, and the System Planner sizes your tubing and fittings. For a more in-depth comparison, see our R-Wide vs Mark II guide.
Whether you're setting up a new market garden or upgrading from drip tape and overhead sprinklers, the Sumi Soaker system streamlines your irrigation while improving crop quality across the board. All Sumisansui Sumi Soaker tubing is made by Sumika Agritech in Japan.
