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Watering a vegetable garden with a sprinkler looks efficient: turn it on and walk away. But a lot of that water never reaches a root. It lands on paths, blows away, or evaporates off leaves.
Drip irrigation delivers water slowly at the base of each plant. For vegetable beds it is usually the better system, but it is not always worth the setup.
How much water each method delivers
- Drip irrigationover 90%
- Sprinklers and hand watering (upper end)up to 70%
- Sprinklers and hand watering (lower end)as low as 50%
Share of applied water available to plants, from Colorado State University Extension. Efficiency drops with poor maintenance or overwatering.
The difference comes from where the water goes. Drip wets only the soil around the roots. Sprinklers wet everything, including air and paths.
Other advantages of drip
- Dry leaves. Many plant diseases spread in wet foliage. Drip avoids that.
- Fewer weeds. Paths stay dry, so weed seeds there struggle.
- Even moisture. Steady watering helps prevent problems like blossom end rot.
- Drought exemptions. Colorado State notes many utilities exempt drip-irrigated landscapes from watering restrictions.
When a sprinkler or hose is fine
- Small gardens you can water by hand in a few minutes.
- Freshly sown seed beds that need the whole surface kept moist.
- Crops planted densely, like a patch of salad greens.
- Rainy climates where you rarely irrigate.
Setting up a basic drip system
- Start at the faucet with a backflow preventer, filter and pressure regulator.
- Add a timer so watering happens early in the morning.
- Run a main line to the beds.
- Lay drip tape or emitter line along the plant rows.
- Flush the lines before closing the ends, and check for dry spots after the first run.
Emitters clog and lines get nicked by tools. Walk the garden while the system runs every few weeks. A drip system on a bad schedule wastes water like any other.
Related reading: Drip Irrigation Installation Costs for Raised Beds and How Much Soil a Raised Bed Takes, and How to Pay Less.
Questions people ask
Is drip irrigation worth it for a small garden?
For one or two small beds, hand watering can be enough. Drip pays off as the garden grows or if you are often away.
How long should I run drip irrigation?
It depends on emitter flow and soil. Run it, then dig a few inches down near a plant an hour later to see how far the water reached.
Can drip irrigation work with a rain barrel?
Yes, with low-pressure drip designed for gravity flow. Standard drip kits need more pressure than a barrel supplies.
Should I bury drip lines?
Covering lines with mulch reduces evaporation and protects them from sunlight. Burying them deep makes clogs harder to spot.
Where these figures come from
- Drip Irrigation for Home Gardens Colorado State University Extension · extension.colostate.edu
- Drip Irrigation for Home Gardens UC Master Gardeners of San Luis Obispo County · ucanr.edu
Figures last checked September 2026.
