Micro Sprinklers for Greenhouses, Nurseries & Frost Protection

A micro sprinkler is a compact, low-flow sprinkler head that delivers a fine, controlled spray over a small radius. It bridges the gap between drip irrigation — which wets only a narrow strip — and full-size overhead sprinklers, which throw too much water and too much pressure at delicate crops. Micro sprinklers operate at low pressure with low flow rates, which makes them a natural fit for greenhouses, nurseries, propagation beds and frost-protection systems in orchards and vineyards.

Because they run at just 1.0 – 3.0 bar and use 30 – 200 L/h per head, micro sprinklers are gentle on young plants, keep foliage wet without soil erosion, and work with the small pumps and filtration setups that are standard in greenhouse and nursery operations.

Why Greenhouses and Nurseries Use Micro Sprinklers

Growers choose micro sprinklers for four practical reasons:

1. Low pressure, low flow. They operate at 1.0 – 3.0 bar with 30 – 200 L/h per head, so they suit small pumps, gravity-fed tanks and systems designed around drip-line economics.
2. Uniform, gentle coverage. The fine spray pattern wets the root zone and canopy evenly without blasting media, plugs or young transplants out of the tray.
3. Precise radius control. With a radius of roughly 3 – 8 m and adjustable deflector screws, you can tune coverage to bench width, block layout or tree spacing.
4. Frost protection. A continuous micro mist or spray releases latent heat as water freezes, holding canopy temperature near 0 °C during frost events — a proven technique for orchards and vineyards.

Common Applications

• Greenhouses & tunnels — bench watering, misting and cooling of vegetables, herbs and ornamentals
• Nurseries & propagation — seedling trays, potted plants and rooting beds
• Orchards & vineyards — under-tree frost protection and summer cooling
• Vegetable & flower beds — small-block overhead irrigation where drip is too narrow and full sprinklers are too heavy

Choosing the Right Micro Sprinkler

Match the sprinkler to your water supply, crop and layout:

Selection factor	Typical range	Notes
Operating pressure	1.0 – 3.0 bar	Lower pressure = smaller droplets, shorter throw
Flow rate	30 – 200 L/h	Larger nozzle = more flow, bigger droplets
Spray radius	3 – 8 m	Spacing ≈ 60–70% of wet diameter
Spray pattern	Full / part circle	Deflector screw adjusts coverage on most models
Filtration	120 mesh (typical)	Protect small nozzles from clogging

A good starting point is to divide your block area by the sprinkler’s wet diameter to get spacing, then confirm the total flow against your pump curve. Not sure which configuration fits your system? Send us your flow rate, pressure and area — we will recommend the right setup.

Micro Sprinklers vs. Drip vs. Full-Size Sprinklers

Each irrigation method has its place, and micro sprinklers sit between drip and full-size overhead systems:

Method	Pressure needed	Coverage style	Best for
Drip / dripline	0.5 – 2 bar	Narrow, continuous wet strip	Row crops, permanent plantings
Micro sprinkler	1.0 – 3.0 bar	Small-radius spray, 3 – 8 m	Greenhouses, nurseries, frost control
Full-size sprinkler	2.5 – 5 bar	Large-radius spray, 12 m+	Open fields, turf, pasture

If you need to wet the canopy, cover a bench or protect trees from frost, a micro sprinkler delivers more of the water where it is needed than either extreme — without the pumping cost of a full-size system or the narrow wetting pattern of drip.

Installation & Maintenance Tips

• Filter the supply. Small nozzles clog easily; a 120-mesh screen or disc filter at the manifold keeps flow consistent.
• Pressure-regulate the zone. Keep each zone within 1.0 – 3.0 bar so every head emits the same flow; add a pressure regulator if your pump runs higher.
• Space by wet diameter. Overlap adjacent sprinklers slightly (spacing of roughly 60–70% of the wet diameter) for even coverage and no dry patches.
• Flush after season. Drain lines before winter and replace worn deflector O-rings as needed — the plastic bodies are corrosion-proof and last many seasons.

Factory-Direct Supply & OEM Options

IRRIGRAIN manufactures micro sprinklers for direct export, which means you buy at factory prices with no distributor markup. We support OEM orders: custom nozzle sizes, deflector settings, colors and private labeling, with low MOQ on standard models and reliable delivery worldwide. Every order is quoted against your project, not a generic catalog — contact us at cj226144@gmail.com with your specifications for a factory-direct quote.