Free tool
How much water does your garden actually need?
Most gardens are watered by feel — a splash here, a soak there. Set four sliders and get a weekly litre figure, plus how long to run a dripline to deliver it.
Your beds
Your watering plan
Water needed per week
264litres
- Watering sessions
- 2 per week
- Water per session
- 132 litres
- Dripline run time
- ~105 minutes
- Saved vs a hose
- ~317 litres a week
Thirstiest. Fruiting crops need steady moisture.
Get the £25 Flow & Measure KitHow the numbers work
The calculator starts from a typical litres-per-metre figure for each planting type in an average UK summer week, then adjusts for heat and how fast your soil drains. Sandy soil drains quicker so needs more; clay holds moisture so needs less. Run time assumes standard inline dripline with emitters every 33cm — roughly 6.3 litres per metre per hour.
Treat it as a strong starting point, not gospel. Push a finger into the soil: damp at two knuckles means you can wait. Your bespoke Bloomline design fine-tunes this properly using your actual tap flow rate and bed measurements.