Short answer: for greens, soak hulls-on buckwheat for 6 to 12 hours, spread it on moist soil in a tray, cover it for 2 to 3 days, then give it light and cut it at 10 to 12 days. For sprouts, soak raw hulled groats for 20 to 30 minutes, rinse well, and eat them after 1 to 2 days, when tiny tails appear.
What are buckwheat sprouts?
Buckwheat (Fagopyrum esculentum) isn't a type of wheat or even a grass. It's the seed of a flowering plant related to rhubarb and sorrel. That's why it's naturally gluten-free and why its greens have a gentle lemony tang.
You can grow it two ways:
- Sprouts from hulled groats (1–2 days): raw buckwheat groats with a tiny tail. Soft and mild, often dried for granola.
- Greens from hulls-on seed (10–12 days): tender microgreens with pink stems and heart-shaped leaves.
Which buckwheat to use
| Buckwheat | Use it for | Notes |
|---|---|---|
| Hulls on (black seed) | Greens and microgreens | The hulls protect the seed while it roots |
| Raw hulled groats (pale green-tan) | Short sprouts | Must be raw, not toasted |
| Kasha (toasted groats) | Nothing | Toasted groats can't sprout |
How to grow buckwheat greens, day by day
- Day0
Rinse and soak for 6–12 hours
Soak about 1 to 1½ cups of hulls-on buckwheat for a 10 × 20 inch tray. Rinse well after soaking.
- Day1
Spread on soil
Spread the seed in a single, even layer over 1 inch (2.5 cm) of moist soil. Press it lightly into the surface.
- Day1–3
Cover and weight
Cover with a second tray and a light weight for 2 to 3 days. Mist daily.
- Day3–10
Light and water
Uncover when the shoots lift the cover. Give them bright light and water from below once a day.
- Day10–12
Brush off hulls and cut
Run your hand over the tray to knock off loose hulls. Cut the greens above the soil once the leaves open.
Sprouting.com gives hulls-on buckwheat 10 to 12 days, with a 6 to 12 hour soak and about 5 cups of greens from ½ cup of seed.1 Published seeding rates for a 10 × 20 tray run as high as 12 oz (about 340 g) of seed.2 For home growing, 1 to 1½ cups is a good start.
How to grow buckwheat sprouts from groats
- Rinse ½ cup of raw hulled groats.
- Soak for just 20 to 30 minutes. Longer soaks make them very slimy.
- Rinse well, then drain in a jar or sieve.
- Rinse and drain two or three times over the next 1 to 2 days.
- Eat them when tiny tails appear, or dry them in a low oven for crunchy granola.
The slime is normal. Soaked buckwheat groats release a starchy, slippery coating. Rinse it away well and it won't hurt the sprouts. Short soaks help.
Safety: buckwheat and sunlight
Buckwheat greens contain fagopyrin, a natural compound that can make skin more sensitive to sunlight if eaten in large amounts. Researchers have measured it in buckwheat sprouts and greens.3 A normal salad portion is fine for most people. Avoid eating large amounts every day, especially before long hours in the sun.
Like all sprouts, raw buckwheat sprouts carry a food-safety risk. The FDA says higher-risk groups should not eat raw sprouts, and Health Canada advises everyone to cook them.45
Problems and fixes
| What you see | Likely cause | What to do |
|---|---|---|
| Hulls stuck on leaves | No weight early on | Weight the tray for 2 to 3 days and brush the hulls off |
| Groats very slimy | Soaked too long | Soak groats only 20 to 30 minutes and rinse well |
| Groats won't sprout | Toasted groats (kasha) | Use raw groats |
| Floppy greens | Not enough light, or harvested late | Give bright light and cut at 10 to 12 days |
| Mold at the base | Seed too thick | Use a single layer and water from below |
How to store buckwheat greens
Cut buckwheat greens keep 4 to 6 days in the fridge in a container lined with a paper towel. Sprouted groats keep 3 days, or dry them and store them in a jar for weeks.
How to eat buckwheat greens
- Salads: mix them with peppery greens like radish or arugula.
- Sandwiches: use them like lettuce.
- Smoothies: a handful adds a mild, tangy green.
- Granola: dried sprouted groats add crunch.
For more, see how to grow buckwheat microgreens.
Where to buy buckwheat for sprouting
We link to hulls-on buckwheat from Sprouting.com, a Canadian company that sells it for growing greens. For sprouts, look for raw hulled groats. Store buckwheat in a cool, dry place.
What to grow next
- Sunflower: crunchy shoots grown the same way.
- Peas: sweet pea shoots.
- Quinoa: another fast, gluten-free seed.
- Popcorn: sweet yellow shoots.
Browse every seed in the Seed Library.
Buckwheat FAQ
How long do buckwheat sprouts take?
Hulled buckwheat groats show a tiny tail in 1 to 2 days and are best eaten then. Buckwheat greens grown from hulls-on seed in a tray take 10 to 12 days.
Is buckwheat gluten-free?
Yes. Despite the name, buckwheat isn't related to wheat. It's the seed of a plant related to rhubarb and sorrel. Pure buckwheat is naturally gluten-free, but check that it wasn't processed alongside wheat if you have celiac disease.
Are buckwheat greens safe to eat?
In normal amounts, yes. Buckwheat greens contain fagopyrin, a compound that can make skin more sensitive to sunlight if eaten in large amounts. Enjoy them as part of a mixed salad rather than in very large daily servings.
Why are my buckwheat groats slimy?
Hulled buckwheat releases a starchy, slippery coating when soaked. That's normal. Rinse it well after the soak and with each rinse. Keep soaks short, 20 to 30 minutes for groats, to limit the slime.
What do buckwheat greens taste like?
Mild and slightly tangy, a bit like a gentle sorrel or lemony lettuce. They're tender and juicy, with pink stems and heart-shaped leaves.
Written by Michael
A passionate sprouting professional sharing practical tips for growing sprouts and microgreens at home. More about Michael
Sources
- Sprouting.com (Mumm's Sprouting Seeds). Buckwheat, hulls on: days to grow, soak time and yield. Link
- CropKing. Microgreen Seed Density Charts (seeding rates per 10 × 20 inch tray). Link
- Kreft S, et al. The content of fagopyrin and polyphenols in common and tartary buckwheat sprouts. Food Chemistry, 2013. Link
- U.S. Food and Drug Administration. Selecting and Serving Produce Safely. Link
- Health Canada. Food safety tips for sprouts. Link
