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Sprinkler for a large lawn

Updated: 23 October 2026

The carton says the sprinkler covers half a garden you have not paced, and the figure is in square feet or a diameter with no pressure beside it. A sprinkler for a large lawn is only as large as your tap, your hose, and the grass you can walk. This page asks whether one head can cover that paced area. It does not choose circle versus rectangle, and it does not set the trip pin. The eight listings are on the [metal sprinkler comparison](/hub/garden-watering/metal-sprinkler). Peter F. read those amazon.co.uk cards and public UK charts for 21 October 2026. We did not measure your lawn. A qualifying purchase can earn a commission at no extra cost to you.

The carton says the sprinkler covers half a garden you have not paced, and the figure is in square feet or a diameter with no pressure beside it.

Our top picks

GRÜNTEK GRÜNTEK oscillating sprinkler

Best overall

GRÜNTEK GRÜNTEK oscillating sprinkler
8.8/10about £49.78
View offer
FANHAO FANHAO impact sled

Alternative

FANHAO FANHAO impact sled
8.6/10about £35.99
View offer
GARDENIX GARDENIX metal spike

Alternative

GARDENIX GARDENIX metal spike
8.0/10about £21.95
View offer
On this page
  1. 1.What the cards say, in metres
  2. 2.What pressure and flow those diameters imply
  3. 3.What buyers on these listings reported
  4. 4.One head or several moves

What the cards say, in metres

Both FANHAO sleds state up to 5,800 square feet. The GARDENIX states a diameter of up to 27 m and no pressure. The impulse LATERN at about £9.99 states a 15 m radius and 530 m² together. A circle of 15 m radius is about 707 m², so the two figures on that card conflict. The lighter LATERN states a 7 m radius and 167 m². A circle of 7 m radius is about 154 m², so 167 m² is a different figure on the same listing, and one UK review puts practical distance nearer 4 m. The GRÜNTEK states up to 462 m², which is already in metres, with a pressure band of 2.76 to 8 bar. Shape stays on the impact or oscillating sprinkler page.

What pressure and flow those diameters imply

Published charts that reach a 25 to 28 m diameter are not these ASINs, and they name the flow. Easy Garden Irrigation’s pro skid chart lists about 14.2 litres per minute and 25 m diameter at 2.0 bar, about 17.2 litres per minute and 27 m at 3.0 bar, and about 19.7 litres per minute and 28 m at 4.0 bar. A Claber impact page sits nearer 1 to 3 bar, with 11 litres per minute at 2 bar, a stated 12.5 m radius, and 500 m². The Scotsman, citing South West Water, puts a sprinkler in the order of 15 litres per minute. The guaranteed minimum in the communication pipe is 7 m head, about 0.7 bar. If the tap is the weak point, pattern and thread come first on the metal sprinkler buying guide.
GRÜNTEK GRÜNTEK oscillating sprinkler

Testsieger

GRÜNTEK GRÜNTEK oscillating sprinkler
8.8/10about £49.78
View offer

What buyers on these listings reported

UK reviews in this set are gardens, not a lab. On the lighter FANHAO, a review says coverage was nearer 100 square feet, about 9 m², against a card of 5,800 square feet. A STYDDI review reports about a 6 m diameter. A review of the lighter LATERN limits sprinkle distance to about 4 m, against a stated 7 m radius. GRÜNTEK reviews say reach drops when pressure is modest. Time a bucket at the hose end and compare the litres with 11 to 17 litres per minute on the charts above.

One head or several moves

Hozelock’s own large-garden group starts over 300 m², and their round models are stated around 314 m² on that brand’s pages. If your paced rectangle is larger than the throw you can see on a five-minute test, move the sprinkler. A second head in series is only where the bullets claim an outlet. The lighter LATERN describes a flow-through cap, and a review calls joining two units the weak point. The impulse LATERN says more heads can be added, and the parts are not in the box. Run a short test before a long soak.

Common questions

How big is 5,800 square feet in metres?
About 539 m². Both FANHAO cards use that line, the 740 g sled with 20 to 80 psi stated and the 970 g sled with no pressure in the spec fields. A UK review of the lighter sled reported nearer 100 square feet. A 20 m by 15 m lawn is 300 m², a different shape from a circle of 539 m², even before pressure cuts the throw.
Will I get a 27 m diameter at home?
Treat 27 m as the GARDENIX listing’s maximum wording. The card does not state the pressure. On a professional skid chart, a 27 m diameter sits near 3 bar and about 17 litres per minute, and that chart is not this ASIN. A five-minute test shows the real radius before you accept about 573 m².
How do I measure my lawn?
Pace the length and the width in steps of about one metre, as Hozelock describes, and multiply. A 12 m by 8 m rectangle is 96 m². An L-shape is two rectangles added, not the longest diagonal. Measure to the edge you are willing to wet, not to the fence if a path must stay dry.
Why does the £9.99 card say 530 litres per minute?
That figure is a flow field on the impulse LATERN, next to a stated 15 m radius and 530 m². A household hose is in the tens of litres per minute on the charts above, not hundreds. The other LATERN prints 170 litres per minute beside a 7 m radius. Copying either number into a water-use sum exaggerates what the tap can supply. Ignore those two fields when you size a water butt or a bill, and time a bucket instead.
Is one sprinkler enough over about 500 m²?
Only if the head really throws that far at your pressure and the shape matches. The GRÜNTEK states 462 m² at 2.76 to 8 bar. The Claber page states 500 m² at 2 bar with a 12.5 m radius, and that product is not in this set. A 15 m radius on the impulse LATERN would be about 707 m², which clashes with the 530 m² on the same card, and reviews say the head may not reverse.
What should I do if the arm will not reach the far edge?
Move the sprinkler and run a short test rather than leaving it in the hope the diameter grows. Check the trip is actually reversing, because a one-way head on the LATERN impulse or the GARDENIX never covers the return side. The jam-jar limit for a new lawn is about 13 mm, and only if a hosepipe ban does not already forbid the test.

Related pages

How to set an impact sprinkler

Metal sprinkler

Best metal sprinkler for the lawn you actually have

Metal sprinkler buying guide: pattern, then the tap

Impact or oscillating sprinkler: circle or rectangle

Sources

Public UK sources listed in the research digest. amazon.co.uk prices, stars and review counts are the saved listing lines for these eight products. Last reviewed 22 October 2026.

  1. Water Industry Act 1991, section 76 (retrieved 22 October 2026)
  2. Water Use (Temporary Bans) Order 2010 (retrieved 22 October 2026)
  3. Water Fittings Regulations 1999, Schedule 2, paragraph 15 (retrieved 22 October 2026)
  4. GSS Regulations 2008, regulation 17G (retrieved 22 October 2026)
  5. Ofwat, hosepipe bans (retrieved 22 October 2026)
  6. Hozelock, how to measure your tap (retrieved 22 October 2026)
  7. RHS, watering (retrieved 22 October 2026)
  8. RHS, August lawns (retrieved 22 October 2026)
  9. Claber impact metal jet spike, via LBS (retrieved 22 October 2026)
  10. Easy Garden Irrigation, garden skid sprinkler pro (retrieved 22 October 2026)