Drip Irrigation
System
Drip irrigation, also called trickle irrigation, supplies small amounts of water directly to the soil around each plant. It is a water-wise choice for beds, greenhouse borders and containers, reducing splash, evaporation and time spent standing with a hosepipe. A timer can keep watering regular during dry spells.
How it works
A network of narrow pipes carries water from a tap, water butt pump or reservoir to drippers positioned beside plants. Each dripper releases water slowly, allowing it to soak into the root zone rather than run across the surface. Fit a filter and pressure regulator where required, then check emitters occasionally for blockages. Run the system in the cool morning or evening, adjusting duration for weather, soil and plant size. Keep tubing covered by mulch where practical, but leave drippers accessible for inspection.
Best for
It suits greenhouses, raised beds, vegetable rows, fruit bushes and sizeable collections of pots. Tomatoes, cucumbers, peppers and courgettes particularly benefit from even moisture at their roots. It is less useful for newly sown broad areas of seed, where fine overhead watering is needed, or for a small garden with only a few pots.
Tips
Water deeply enough to moisten the root zone, then allow the surface to dry slightly. Place emitters a little away from stems to encourage spreading roots. Test the system before a holiday and inspect connections for leaks. Mulch around plants to make each litre work harder, and alter timer settings after rain or cooler weather.
Drip Irrigation: frequently asked questions
How does drip irrigation work?
A network of narrow pipes carries water from a tap, water butt pump or reservoir to drippers positioned beside plants.
What is drip irrigation best for?
It suits greenhouses, raised beds, vegetable rows, fruit bushes and sizeable collections of pots.
What are some tips for drip irrigation?
Water deeply enough to moisten the root zone, then allow the surface to dry slightly.
General guidance for UK gardens and allotments. Page updated 18 Sep 2026.