How to set up drip irrigation in the vegetable garden?
A garden drip system runs from the tap through an optional timer, a pressure regulator and a filter to a supply line, with drip lines or soaker hoses along the rows. It puts water straight at the roots, cuts waste and keeps leaves dry. Tune it to your soil type.
Components
In order, starting at the tap:
- Timer (optional), fitted straight onto the tap.
- Pressure regulator: drip systems run at low pressure, and high pressure can pop fittings apart.
- Filter: stops emitters clogging; clean it regularly.
- Supply line, feeding the drip lines or soaker hoses along the rows.
Tune to your soil
On sandy soil, set emitters closer together and run the system in shorter, more frequent spells; on clay, space them wider and water for longer, less often.
How long to run it
US extension services advise wetting the soil 10–12 inches (25–30 cm) deep. After a run, dig a small hole to see how far the water has gone; once you know how long that takes, set the timer to match.
Under mulch
Drip lines can lie on the soil beneath a mulch, which cuts evaporation and shields the tubing from sunlight.
In the app
The app takes account of recent rainfall in your area and adjusts your watering reminder to match.
Frequently asked questions
Can I use rainwater?
Yes, but dirtier water clogs emitters more easily, so fit a good filter and keep it maintained.
Does it work for pots?
Yes, with an individual dripper for each pot.