One bag, three jobs. Sprout it in a jar for the biggest, mildest leafy sprout there is. Grow it in a tray as a sweet, tender microgreen. Or sow it outside, where it is one of the best cover crops a garden can have — and one of the best things you can do for bees. All three are on this sheet.
Three things this seed does
Sprout it in a jar
The biggest, sweetest leafy sprout you can grow — crisp, mild and cool. Two tablespoons fills a quart jar in under a week.
5–6 days
Grow it as microgreens
A tray of tender, mild greens with a sweetness close to fresh peas. Sturdier than sprouts and easier to plate.
8–12 days
Sow it in the garden
Crimson clover is one of the best cover crops there is. It feeds the soil nitrogen, smothers weeds, and covers itself in crimson flowers the bees find from a distance.
A season
What you actually bought
Crimson clover (Trifolium incarnatum) — whole, untreated, uncoated seed. It is the largest of the clovers used for sprouting — roughly twice the seed weight of red clover — which is exactly why it drains better in a jar and mats less than the fine clovers. The same seed in the same bag goes in a jar, a tray, or the ground.
Jar sprouts — five moves
Step 1
Soak
4–8 hours
Put 2 tbsp of seed in a clean quart jar with a mesh lid. Rinse, cover with cool water, and leave it on the counter. Soak once only.
Step 2
Drain
Every time
Pour the water off and rest the jar mouth-down at 45°. Clover drains more easily than alfalfa, but it still needs to drain properly.
Step 3
Rinse
2× daily
Every 8–12 hours, fill, swirl to break up clumps, pour off, drain fully, return to the angle. Three times a day in hot weather.
Step 4
Green Up
Day 4
For the last day before harvest, move the jar to indirect light — never direct sun, which cooks the jar. Greening is cosmetic; they are good either way.
Step 5
Harvest
Day 5–6
Pick when most leaves are open and green, usually the end of day 6. Rinse, drain very well, refrigerate.
What each day looks like
Evening
Soak
2 tbsp in cool water, 4–8 hours. Once only — never soak again.
Day 1
Drain & start
Seeds swell and cling together. Rinse, drain hard, set at an angle.
Day 2–3
White tails
Roots push out and the jar starts to fill. Pale and colourless, which is correct.
Day 4
Into the light
Yellow leaves appear. Move to indirect light and they begin to green.
Day 5–6
Harvest
Leaves open and mostly green, jar packed full. End of day 6 is the classic finish.
Beyond
Diminishing
It keeps growing but gets stringy. Little reason to push past day 6.
Two tablespoons is enough — really
Clover yields about seven times its weight, so two level tablespoons of seed fills a quart jar with roughly four cups of sprouts. The single most common mistake is loading the jar like you would with beans. Overseed and the mat cannot drain, the middle stays wet, and what should have been a beautiful jar goes sour on day three. If your jar keeps failing, use less seed before you change anything else.
Pick your sprouting method
Mason Jar
The classic
- 2 tbsp seed in a clean quart jar; fit a mesh sprouting lid or cheesecloth under a canning ring.
- Rinse, cover with cool water, soak 4–8 hours.
- Drain completely; prop mouth-down at 45° in a bowl or dish rack.
- Rinse and drain twice a day, swirling to break up the mat.
- Day 4 into indirect light; harvest day 5–6.
Best for
Almost everyone. Crimson clover is large enough to drain well, which makes it one of the easiest leafy sprouts to get right in a jar.
Almost everyone. Crimson clover is large enough to drain well, which makes it one of the easiest leafy sprouts to get right in a jar.
Sprouting Tray
Best greening
- Soak in a separate jar or bowl — trays are for growing, not soaking.
- Drain, then spread the seed in a thin, even layer across the tray.
- Set over the drip pan with a slight tilt so water runs off.
- Water gently twice a day and let it drain right through.
- Day 4 into light; harvest day 5–6.
Best for
The best-looking crop. Light reaches every sprout, so a tray greens up more evenly than a jar and cuts more easily.
The best-looking crop. Light reaches every sprout, so a tray greens up more evenly than a jar and cuts more easily.
Bag or Colander
No gear needed
- Bag: soak in the bag in a bowl, lift, drip, then hang over the sink.
- Dunk the bag in cool water twice a day and hang to drain.
- Colander: soak in a bowl, drain into a fine colander, cover with a damp towel.
- Rinse under the tap twice a day, shake dry, re-cover.
- Uncover on day 4 for light; harvest day 5–6.
Best for
Travel and tight counters. Use a fine mesh — clover is small enough to wash through a coarse colander.
Travel and tight counters. Use a fine mesh — clover is small enough to wash through a coarse colander.
Harvest, store, and eat
- De-hull first. Fill the jar, swirl hard, and pour off the hulls that float. They are edible but they hold water and shorten fridge life.
- Dry them well. The step people skip. Drain 8–12 hours, spin in a salad spinner, or roll in a clean towel.
- Container. Loosely covered, or a bag with a paper towel to catch moisture. Not sealed airtight while damp.
- Fridge. 40°F or below. Best within a week; a well-dried crop can go considerably longer.
- Toss anything dark, slimy, or smelling sour or musty.
- As a salad on its own. Clover is mild and sweet enough to eat by the bowl with oil and lemon — not everything is.
- Sandwiches and wraps — crisp, cool, and it does not fight the filling the way radish does.
- On soup, eggs, avocado toast, grain bowls — added at the table, not cooked.
- Mixed with a spicier sprout — clover is the calm one, and it takes the edge off radish or mustard.
- Smoothies — a handful vanishes completely.
Jar sprouts — something went wrong
| What you see | Why it happens | What to do |
|---|---|---|
| Fuzzy white growth on the roots | Almost always root hairs, which clover produces freely. Bright white, uniform, only on the root tips right below the seed, and no smell. Mold is uneven and cobwebby or powdery, spans several sprouts, may be grey or green, and smells musty. | If you are not sure, throw the batch out. Root hairs need nothing. For anything else, discard, scrub and sanitize the jar and lid, and start over with less seed and a third rinse each day |
| Sour smell, slimy mat | Nearly always too much seed. Water sits in the middle of an overpacked jar and never drains out. | Cut back to 2 level tablespoons, drain much harder at a true 45°, and add a third rinse. Caught on day one it recovers; if it smells bad, start over |
| Still pale and yellow on day 5 | No light. Sprouts grow perfectly well in the dark, they just never colour up. | Move to indirect light for a day and keep rinsing. Sprouts buried in the middle of the jar stay yellow regardless and are fine to eat |
| Tan flakes through the crop | Seed hulls. Completely normal for clover, and there will be plenty of them. | At the final rinse, fill the jar, swirl hard, and pour the floating hulls off the top. Two or three passes gets most of them |
| Hard seeds that never sprouted | Clover carries some naturally hard seed — a coat that takes far longer to absorb water. Cold water, a short soak, or an old bag all make it worse. | Extend the soak toward the full 8 hours, and check the water was cool — not cold, not warm. If much of the jar stays hard, send us the bag’s lot code; that is a germination question, not a technique one |
| Sparse, thin crop | Too little seed, or seed that dried out mid-cycle. | Two tablespoons per quart is the target. Never let the jar go fully dry once it has started, and keep rinsing on schedule |
Growing it as microgreens
Same seed, different crop. Microgreens grow in a shallow bed of soil, get real light, and are cut above the soil line — so you eat stem and leaf, not root and hull. Clover makes a particularly good one — tender and mild, with a sweetness closer to fresh peas than to anything peppery.
| Item | What works | Notes |
|---|---|---|
| Tray | 10×20 nursery tray, or any shallow food-safe container | 1–2″ deep. Drainage holes over a solid tray is ideal, but one solid tray works if you water carefully |
| Medium | Potting mix, seed-starting mix or coco coir | Fill about 1½″ deep and level it flat — low spots stay wet and grow mold |
| Seed | About 1 tbsp (15–20 g) per 10×20 tray | A dense but single layer across the surface. Scale to roughly 2 tsp for a 10×10 tray |
| Soak | None — sow it dry | Small seed does not need soaking for a tray, and wet seed will not broadcast evenly. Save the soak for the jar |
| Cover | A second tray, a board, or a cake pan | For the blackout phase. A light weight is optional; clover is fine seed and crushes easily, so do not load it up |
Microgreens — five moves
Step 1
Sow
Day 0
Level moist soil in the tray and scatter 1 tbsp of dry seed evenly across it — dense, but a single layer. Press gently. Do not bury it. Mist well.
Step 2
Blackout
Day 1–3
Cover with an inverted tray. Check daily and mist if the surface looks dry. Growing in the dark against the cover pushes stems up straight.
Step 3
Uncover
Day 3–4
Once most seeds have sprouted and are lifting the cover, take it off. Pale yellow at first; bright indirect light greens them within a day.
Step 4
Water
Daily
Set the tray in a reservoir for 10–15 minutes, then lift it out and drain it fully. Bottom-water only, once a day at most — standing water is what causes rot.
Step 5
Cut
Day 8–12
Harvest at 2–3″, when the seed leaves are open and the first true leaves are just showing. Cut with scissors above the soil line.
What each day looks like
Day 0
Sow & cover
Soaked seed down, misted, covered. Nothing to see.
Day 1–2
Cracking
Roots emerge under the cover. Mist if the surface dries.
Day 3–4
Lift-off
The cover is being pushed up. Uncover. Pale yellow stems, and that is right.
Day 5–7
Greening
Seed leaves open and the tray goes properly green.
Day 8–12
Harvest
2–3″ tall, first true leaves just appearing. Cut the whole tray.
Beyond
Toughening
True leaves fill in, stems firm up and the sweetness fades. Cut before this.
Cutting & keeping
- Cut dry. Skip the watering the morning you harvest — dry greens keep far longer.
- Sharp scissors, just above the soil. Take a handful, cut, set it in a bowl.
- Usually no washing. Bottom-watered greens never got dirty. If you rinse, dry them fully.
- Store in a paper-towel-lined container in the fridge, best within 5–7 days.
- One cut only — they do not regrow. Compost the mat and re-sow.
Microgreens — what goes wrong
- Tall and floppy? Too long in blackout, or not enough light after. Uncover as soon as it lifts the cover.
- White fuzz on the soil? Usually root hairs. If it is slimy, spreading up the stems and musty, compost the tray.
- Patchy? Level the soil before sowing and mist thoroughly. Scatter in two passes at right angles.
- Bitter? Grown past the true-leaf stage. Cut at day 8–12.
- Soil in the greens? Cut higher, and bottom-water only once uncovered.
Sowing it in the garden
Crimson clover is one of the most useful cover crops a home gardener can plant. As a legume it partners with soil bacteria to pull nitrogen out of the air and leave it in your ground, it shades out winter weeds, and in spring it throws up deep crimson flower heads that bees work all day.
Feeds the soil
Fixes roughly 70–150 lb of nitrogen per acre when grown all the way to bloom, and a good deal less if you cut it early.
Green manure
Covers the ground
Dense growth crowds out winter weeds and keeps bare soil from washing away over the wet months.
Living mulch
Feeds the bees
The flowers produce heavy nectar and pull in bees of every kind, and the stand shelters pirate bugs and other aphid-eating predators.
Pollinator patch
How much, and when
| Question | Answer |
|---|---|
| How much seed? | About 1 oz per 100 square feet broadcast — a rounded quarter-cup. A one pound bag covers about 1,600 square feet. At field scale, 22–30 lb per acre broadcast or 15–18 lb drilled |
| How do I sow it? | Rake the bed level, scatter the seed as evenly as you can, then rake lightly so it sits ¼ to ½ inch deep — no deeper — and water it in. Seed lying on top of dry soil will not come up |
| When do I sow it? | For a winter cover, six to eight weeks before your average first frost — roughly August in the north, as late as November on the Gulf coast. It needs the head start to root in before cold |
| Will it survive winter? | Reliably in zone 8 and warmer, and often through the lower reaches of zone 6 — though 6 and 7 are a gamble that turns on variety and snow cover. In zone 5 and colder it winterkills — which is not a failure. Dead clover leaves a weed-suppressing mulch mat you can plant straight through in spring |
| Can I sow in spring? | Yes in cold regions — sow as early as the ground can be worked and treat it as a summer green manure, turning it in before you plant |
| How tall does it get? | One to three feet by the time it flowers |
Inoculate it the first time you grow clover
Clover only fixes nitrogen in partnership with a specific soil bacterium, Rhizobium. If clover has grown in that ground before, the bacteria are usually already there. If it has not — a new bed, a raised bed of bought soil, a lawn conversion — dust the seed with a clover inoculant before sowing. It costs very little, takes a minute, and without it the clover still grows perfectly well but fixes far less nitrogen, which was most of the reason to plant it. Aim for a soil pH of 6.0 to 7.0 — fixation drops off sharply below 5.5, and at 5.0 the root nodules may not form at all. Mix inoculant only into the portion you are sowing, in a separate bowl — never in the seed bag.
Ending the crop
- Time it to the bloom. Nitrogen peaks at late bloom to early seed set. Cutting it down early looks tidy but throws away most of what you grew it for.
- You get one or the other. Terminating at late bloom for maximum nitrogen is exactly early enough to stop it setting seed — so max nitrogen and self-reseeding are a choice, not a package.
- Mow or crimp it, then leave the residue on the surface as mulch or turn it shallowly into the top few inches.
- Mowing after the early bud stage kills it — you do not need herbicide and you do not need to dig it all out.
- Wait two to three weeks between terminating and planting, so the residue breaks down enough to plant into. Unlike a grass or cereal cover, a legume does not tie nitrogen up on the way down — it releases it.
- Let it set seed and crimson clover may reseed itself — how reliably depends on the variety and on spring moisture. A bonus for a permanent patch, a nuisance if you wanted the bed back.
- Leave a strip flowering for the bees even if you cut the rest. It costs you nothing.
All three uses at a glance
| Jar sprouts | Microgreens | Garden | |
|---|---|---|---|
| Seed | 2 tbsp per quart jar | 1 tbsp per 10×20 tray | 1 oz per 100 sq ft |
| Soak | 4–8 hours | None — sow dry | None — sow dry |
| Ready | Day 5–6 | Day 8–12 | Flowers the following spring |
| You eat | The whole sprout | Stem and leaf, cut above soil | Nothing — the soil does |
| A 1 lb bag makes | About 20 quart jars | About 25 trays | About 1,600 sq ft of cover |
The garden crop — something went wrong
| What you see | Why it happens | What to do |
|---|---|---|
| Patchy, thin germination | Seed broadcast onto dry or crusted soil and never got covered, or it went in during a dry spell. | Rake the seed in to about ¼ inch and water until it is up. Broadcast seed sitting on the surface is bird food, not a cover crop |
| Came up, then died over winter | Either it went in too late to root properly, or you are in zone 5 or colder where it winterkills by design. | Sow six to eight weeks before first frost next time. If you are in a cold zone, this is expected — leave the dead mat as mulch and plant through it |
| Grew well but the soil seems no richer | Almost always one of two things: no inoculant on ground that had never grown clover, or the crop was cut down long before it bloomed. | Inoculate at sowing on new ground, and let it reach late bloom before terminating. Those two decisions are where nearly all the nitrogen comes from |
| Weeds came through anyway | Sown too thin, or sown too late to close the canopy before winter. | Use the full rate — 1 oz per 100 square feet — and sow early enough that it covers the ground before growth slows |
| It is spreading where I did not want it | You let it set seed. Hard seed can then sit in the soil and come up a season or two later. | Terminate at bloom, before seed sets, in any bed you want back. Save the reseeding trick for a permanent pollinator strip |
| Next crop looks starved right after tilling in | Not the clover taking nitrogen back — a legume releases it. The bed simply needs time for a heavy mat of green residue to break down. | Wait two to three weeks between terminating and planting, and it swings back the other way |
Sensible handling
- Clean hands, a clean jar or tray, clean tools. Wash equipment in hot soapy water between every crop.
- Use drinkable water for soaking, rinsing and watering.
- Rinse and drain on schedule — steady drainage is the best defense against bacteria in a sprouting jar.
- Grow at normal room temperature with air moving, out of direct sun, and refrigerate promptly at 40°F or below.
- The FDA advises that young children, older adults, pregnant women, and anyone with a weakened immune system avoid raw or lightly cooked sprouts of any kind; thorough cooking reduces the risk.
- That advisory is about sprouts specifically. Microgreens are a different commodity — cut above the soil line, so the roots are not eaten, and federal produce rules treat them like other fresh greens. They are not sterile either, though: refrigerate promptly, and anyone pregnant, elderly, very young or immunocompromised should ask their doctor about raw greens of any kind.
- Inoculate in a bowl, never in the bag. Garden inoculant is a live bacterial culture on a peat carrier and is not made to food standards. Treat only the seed you are about to sow, in a separate container.
- Only ever sprout seed sold as sprouting seed. Clover from a farm store is often lime-coated or fungicide-treated, usually dyed a bright colour to warn you. Coated, dyed or treated seed is never safe to eat, whatever it looks like once it sprouts.
- Keep the garden out of the food bag. Separate scoops, and store the bag in the kitchen rather than a shed or garage alongside pesticides. Seed sown outdoors stays outdoors.
- Microgreens go in clean bagged mix, indoors — never garden soil or manure compost, which you would then be eating raw.
- Growing sprouts at home does not make them safer than store-bought. The same care applies either way.
- When in doubt — off smell, sliminess, discoloration — throw it out and start fresh.
Questions we get a lot
Is this the same clover that’s in Broccoli & Friends?
Yes — crimson clover is one of the four in that blend. This is the same seed on its own, if you decided the clover was your favourite part.
Crimson clover or red clover for sprouting?
Crimson, comfortably. The seed is noticeably larger than red clover, so it drains better, mats less, and makes a bigger leafy sprout.
Can I sprout some and sow the rest?
Yes. It is one bag of untreated seed with nothing on it, which is exactly why it works in a jar and in the ground.
Do I have to buy inoculant?
Only for the garden, and only if clover has never grown in that ground. It is a few dollars and it is the difference between a cover crop and a nitrogen crop.
How long does the seed keep?
For sprouting, plan on one to two years — germination falls off with age, and weak seed makes uneven, mold-prone jars. Kept cool, dark and dry it stays good for the garden considerably longer.
Storing the rest of the bag
Reseal it and keep it cool, dark and dry — a pantry is fine, a freezer is better. Never return damp or soaked seed to the bag.
Questions about your jar, your tray or your beds? We actually answer.
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