Watering and hoses

How long to water a garden with a hose

A good target for most vegetable gardens is about 1 inch of water a week, including rain. To turn that into minutes, you need two numbers: the size of the bed and how much water your hose delivers.

Updated 26 Oct 2026 · Facts checked against the sources at the end.

Illustration of a coiled garden hose and a watering can beside a vegetable bed — AI illustration (decorative).

Step 1: Measure your hose flow

Time how long your hose takes to fill a 5-gallon bucket at the setting you usually use. Then:

Gallons per minute = 5 ÷ minutes to fill. If it takes 1 minute 15 seconds (1.25 minutes), your flow is 4 gallons per minute. More in garden hose flow rate.

Step 2: Do the math

One inch of water over one square foot is about 0.62 gallons. So:

A 4 x 8 foot bed (32 sq ft) needs about 20 gallons for 1 inch.
A 10 x 10 foot bed (100 sq ft) needs about 62 gallons.
1,000 sq ft needs about 623 gallons.

Minutes = gallons needed ÷ gallons per minute. At 4 gallons per minute, the 4 x 8 bed needs about 5 minutes of steady watering at the base of the plants for a full inch, if every drop soaks in. In practice, water in two or three sessions so it can soak in without running off.

Step 3: Check with a tuna can

For sprinklers, University of Illinois Extension suggests setting an empty tuna can (about 1 inch deep) in the bed. When it is full, you have applied about an inch. Note the time and use it next time.

Water deeply, not daily

Water deeply once or twice a week rather than a little every day. Deep watering grows deep roots.
Water the soil, not the leaves, and do it in the morning.
In heat in the 90s, plants may need up to about 2 inches a week.
Pots and raised beds dry faster than the ground; check them daily in summer.
Mulch slows evaporation, so you water less.

Frequently asked questions

How long should I water my garden with a hose?

Long enough to give about 1 inch of water a week including rain. Measure your hose flow with a 5-gallon bucket, then divide the gallons your bed needs (about 0.62 per square foot) by your gallons per minute.

Is it better to water every day or deeply once a week?

For beds in the ground, deep watering once or twice a week usually grows stronger, deeper roots. Pots may need daily water in summer.

What time of day is best to water?

Early morning. Less water is lost to evaporation and leaves dry quickly, which reduces disease.

Sources

Written in our own words from the sources above. See our editorial policy. Spotted a mistake? Tell us.