Short answer: for year-round sprouting, keep jars at 65 to 75°F (18 to 24°C). In summer, rinse three times a day with cool water and keep jars out of the sun. In winter, move jars to a warmer spot, like the top of the fridge, and allow an extra day. Start a new jar every 2 to 3 days for a steady supply.
Year-round sprouting by season
| Season | Challenge | What to do |
|---|---|---|
| Spring | Changing temperatures | Watch soak times, rinse twice a day |
| Summer | Heat speeds spoilage | Rinse 3 times a day, cool water, keep out of sun |
| Fall | Cooler kitchens | Find a warm spot, expect slower growth |
| Winter | Cold, dry air | Warm spot (65–75°F), maybe an extra day |
Summer sprouting
- Rinse three times a day with cool water.
- Soak in the fridge if your kitchen is very warm.
- Keep jars out of direct sun.
- Drain very well. Heat plus water means spoilage.
- Harvest a little early and refrigerate promptly.
Fast sprouts like mung beans and lentils are great in summer.
Winter sprouting
- Find a warm spot. The top of the fridge or a cupboard near the stove often works.
- Use room-temperature water for rinsing.
- Allow an extra day. Cold slows growth.
- Green leafy sprouts near a bright window on the last day.
Winter is a great time for alfalfa, broccoli and grains like wheat for sprouted bread.
Spring and fall
These seasons are easiest. Rinse twice a day and keep an eye on temperature swings.
A simple year-round rotation
- Day 1: start jar A.
- Day 3: start jar B.
- Day 5: jar A is ready. Start jar C.
- Keep going. There's always one jar ready.
Use the sprouting calendar to see how long each seed takes.
Year-round sprouting tips
- Store seed well: cool, dry and dark, in a sealed jar.
- Keep a log: note soak time, room temperature and days to harvest.
- Switch seeds by season: quick beans in summer, leafy sprouts and grains in winter.
New to sprouting? Start with sprouting in a mason jar.
Seeds in this article
Frequently asked questions
Can you sprout seeds in winter?
Yes. Sprouts grow indoors in a jar, so winter is fine. They grow more slowly in a cold kitchen, so find a spot around 65 to 75°F (18 to 24°C) and expect an extra day.
How do I sprout in hot weather?
Rinse three times a day with cool water, keep jars out of the sun, and drain very well. In very hot weather, soak beans in the fridge.
What's the ideal temperature for sprouting?
About 65 to 75°F (18 to 24°C). Below 60°F sprouting slows a lot. Above about 80°F sprouts spoil faster.
How do I keep a steady supply of sprouts?
Start a new jar every 2 to 3 days. With two or three jars on rotation, you'll always have one ready.
Written by Michael
A passionate sprouting professional sharing practical tips for growing sprouts and microgreens at home. More about Michael
