Tools · buyer's guide
Best Rain Barrels for Garden Watering (2026)
Watering is the chore that never lets up in summer, and tap water adds up fast. The free fix is already falling on your roof. A 1-inch rain on a 1,000 square foot roof sheds about 600 gallons, so a single 50-gallon barrel fills in one good storm. Here is the barrel to catch it, the kit to hook it up, and the best way to put that water on your plants.
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How we picked
A rain barrel is only worth it if the water actually gets to your beds. We picked for a tank that holds enough to matter, an easy tie-in to your downspout, and a way to move the water without hauling cans.
Set your expectations by the math. One 50-gallon barrel fills from a single 1-inch rain and waters a small garden for a few days, but in a dry spell it empties fast. Link two or three barrels if you want to ride out a long stretch with no rain.
Our picks
- Best all-around
50-Gallon Rain Barrel
Best all-around
- 50 gallons fills from one 1-inch rain and is enough to hand-water a small garden for a few days.
- A screened top keeps out leaves and stops mosquitoes from breeding in the tank.
- Downside: a full barrel can freeze and crack over winter, so drain it before the first hard freeze.
- Best for easy hookup
Downspout Diverter Kit
Best for easy hookup
- It taps into your existing downspout so you do not have to cut or move the gutter, and it sends the overflow back down the spout once the barrel is full.
- Most kits install in under an hour with basic hand tools.
- Downside: you have to cut into the downspout to fit it, so measure twice before you make the cut.
- Best way to use the water
Soaker Hose
Best way to use the water
- A soaker hose weeps water right at the roots, so more of your saved rain soaks in instead of running off or drying in the sun.
- It runs on the low pressure a gravity-fed barrel puts out, which most sprinklers cannot do.
- Downside: a barrel sitting on the ground gives weak flow, so raise it on blocks a foot or two to help the water move.
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Questions, answered straight
A 1-inch rain on a 1,000 square foot roof sheds about 600 gallons, so a 50-gallon barrel fills from a single good storm. Link more barrels together if you want to store extra for dry spells.
It is fine for watering the soil around your plants. To be safe, water the ground and not the leaves of anything you eat raw, and keep the barrel screened so it stays clean.
Yes. Water expands when it freezes and can crack the barrel, so drain it and leave the spigot open before the first hard freeze. Store it upside down if you can.
A barrel on the ground only has gravity behind it, so flow is slow. Raise it on cinder blocks a foot or two, and pair it with a soaker hose instead of a sprinkler, which needs more pressure.