Heirloom

Sorrel

Rumex acetosa

Wikimedia Commons

Sorrel microgreens are delicate, tender shoots harvested at 10 days with bright green cotyledons and thin stems. These heirloom varieties deliver an intense lemony flavor with pronounced acidic tartness, making them ideal for elevating salads, soups, and gourmet plating. Quick-growing and easy to cultivate, they add a distinctive bright, tangy note that distinguishes them from common microgreens.

Harvest

10d

Days to harvest

📅

Sun

Full sun

☀️

Zones

1–11

USDA hardiness

🗺️

Height

8 inches

📏

Planting Timeline

Zone:

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Start Indoors

Harvest

Start Indoors

Harvest

Showing dates for Sorrel in USDA Zone 7

All Zone 7 microgreen →

Zone Map

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Sorrel · Zones 1–11

What grows well in Zone 7? →

Growing Details

Difficulty

Easy

WaterRegular

SeasonPerennial

FlavorIntense lemony flavor with bright, acidic tartness.

ColorGreen

Size8"

Zone-by-Zone Planting Calendar

Zone	Indoor Start	Transplant	Direct Sow	Harvest
Zone 1	January – December	—	—	January – December
Zone 2	January – December	—	—	January – December
Zone 11	January – December	—	—	January – December
Zone 12	January – December	—	—	January – December
Zone 13	January – December	—	—	January – December
Zone 3	January – December	—	—	January – December
Zone 4	January – December	—	—	January – December
Zone 5	January – December	—	—	January – December
Zone 6	January – December	—	—	January – December
Zone 7	January – December	—	—	January – December
Zone 8	January – December	—	—	January – December
Zone 9	January – December	—	—	January – December
Zone 10	January – December	—	—	January – December

Succession Planting

Sorrel microgreens go from seed to cut in about 10 days, so a rolling sow schedule is the only way to keep a steady supply. Start a new tray every 7–10 days — that puts a fresh cut coming ready just as the previous tray finishes. There's no seasonal cutoff at the microgreen stage; you can sow indoors any month of the year without worrying about heat bolting or cold stall. One 10×20 tray per week is plenty for most households; scale up if you're adding it to salads every day.

Complete Growing Guide

Produces some of the earliest greens of spring and the latest of fall. The tender, fresh green leaves can grow to about 8" long and have an intense lemony flavor. Use sparingly in salads or generously in cocktails, soups and sauces, and especially with fish. French type. Perennial in Zones 4-9. According to Johnny's Selected Seeds, Sorrel is 40 baby; 60 full size to maturity, perennial, open pollinated.

Light: Full sun (6 or more hours of direct sunlight a day). Spacing: 12 inches-3 feet. Propagation: Seed.

Harvesting

Sorrel reaches harvest at 40 baby; 60 full size from sowing per Johnny's Selected Seeds. Expect 8" at peak.

Fruit is a reddish brown, 3-angled achene, often with a round tubercle on one or all three sides.

Color: Red/Burgundy. Type: Achene.

Edibility: Leaves for flavoring, flowers, and seeds.

Storage & Preservation

Freshly harvested sorrel microgreens keep best in a breathable container lined with paper towels, stored at 32–40°F with 90–95% humidity. A sealed plastic clamshell works well if you layer in absorbent material to prevent moisture buildup. Expect a shelf life of 5–7 days under these conditions, though quality declines noticeably after day four.

For longer storage, freezing is most practical: blanch lightly for 30 seconds, shock in ice water, pat dry thoroughly, then freeze in single layers before transferring to freezer bags. Frozen sorrel retains its tangy flavor for up to three months and works excellently in soups and sauces post-thaw.

Drying concentrates the lemony tartness; dehydrate at 95–105°F until crispy, then store in an airtight jar. A helpful note: sorrel's oxalic acid content increases slightly after harvest, so consume or preserve within a few days for the most pleasant mild flavor. Older microgreens develop a sharper, more astringent taste.

History & Origin

Sorrel is open-pollinated, meaning seed saved from healthy plants will produce true-to-type offspring. Listed in the Johnny's Selected Seeds catalog.

Sorrel is a perennial herbaceous plant in the family Polygonaceae. It is also called common sorrel, garden sorrel, spinach dock and narrow-leaved dock.

Advantages

+Produces greens earlier in spring and later in fall than most crops
+Intense lemony flavor adds distinctive brightness to fish dishes and cocktails
+Perennial plant provides harvests for multiple years without replanting
+Easy to grow with minimal care requirements for home gardeners
+Tender leaves reach desirable 8-inch length quickly in cool seasons

Considerations

-Lemony tartness requires restraint in salads or overpowers delicate flavors
-Limited hardiness to zones 4-9 restricts growing regions significantly
-Tendency to bolt during hot summer weather reduces usable harvest window
-French varieties may require cooler conditions than some home gardeners can provide

Companion Plants

Sorrel microgreens share a tray environment well with other cool-preferring, low-competition greens — lettuce, spinach, arugula, and pea shoots all want the same 60–70°F range and won't outpace sorrel or release anything allelopathic into adjacent root zones. Chives, parsley, and cilantro land in the same category: similar water needs, no chemical interference, no germination-speed mismatch that would let one shade out the other.

Mustard greens and brassica microgreens are worth keeping on a separate tray. Mustard germinates in 2–3 days and throws up a canopy fast — it'll shade slower neighbors before sorrel's cotyledons even fully open. Fennel is its own problem: it produces anethole and other volatile compounds that suppress germination in a wide range of seeds, and it's best grown solo regardless of what you're putting next to it.

Plant Together

Lettuce

Similar growing conditions and harvest timing, good space utilization

Spinach

Compatible growth rates and water requirements for microgreen production

Pea Shoots

Nitrogen fixation benefits soil, similar harvest timing

Arugula

Similar germination time and growing conditions, complementary flavors

Radish

Fast germination helps break soil crust, compatible harvest timing

Chives

Natural pest deterrent, doesn't compete for space due to different root systems

Parsley

Similar moisture needs and growing conditions for microgreen production

Cilantro

Compatible growth requirements and harvest schedule

Keep Apart

Mustard Greens

May cross-pollinate with sorrel affecting seed quality if plants bolt

Fennel

Allelopathic compounds inhibit germination and growth of most other plants

Brassica Microgreens

Compete for similar nutrients and may attract same pests like flea beetles

Nutrition Facts

Calories

69kcal(3%)

Protein

1.5g(3%)

Fiber

5.3g(19%)

Carbs

17.6g(6%)

Fat

0.1g(0%)

Vitamin C

54.1mg(60%)

Vitamin A

5mcg(1%)

Iron

1.61mg(9%)

Calcium

8mg(1%)

Potassium

304mg(6%)

Per 100g serving. % Daily Value based on 2,000 calorie diet. Source: USDA FoodData Central (FDC #167782)

Troubleshooting Sorrel

What you'll see, why it happens, and what to do about it.

Seeds germinate unevenly or not at all by day 5–6, with patchy trays

Likely Causes

Inadequate moisture — sorrel seeds dry out fast in the top layer of the medium
Old seed stock losing viability (sorrel seed viability drops off after 2 years)

What to Do

1.Cover the tray with a humidity dome or damp paper towel until sprouts emerge
2.Test germination rate on a damp paper towel before committing a full tray — if fewer than 7 out of 10 sprout in 5 days, get fresh seed
3.Press seeds lightly into the medium so they make firm contact, then mist rather than pour

Seedlings are pale yellow-green instead of bright green at day 7–8

Likely Causes

Insufficient light — sorrel microgreens need at least 6 hours of direct light or a grow light held 2–3 inches above the tray
Leaving the humidity dome on too long after germination, which starves seedlings of light and airflow

What to Do

1.Move the tray to a south-facing window or put it under a full-spectrum LED for 12–14 hours a day
2.Pull the dome off as soon as 80% of seeds have sprouted — humidity past that point does more harm than good
3.In weak winter light, lower your grow light to 2 inches above the canopy and add a second daily hour of exposure

Stems flopping over by day 8, before the tray is ready to cut

Likely Causes

Etiolation from low or angled light — sorrel stretches hard toward any off-center light source
Sowing too densely, which forces stems to compete vertically instead of filling out

What to Do

1.Reposition the light source directly overhead — side lighting is the main driver of lean, not just intensity
2.Aim for roughly 1–1.5 tablespoons of seed per 10×20 tray; packing them in tighter makes the problem worse once it starts
3.Cut at day 10 even if stems look thin — waiting longer won't reverse etiolation, and the oxalic-acid sharpness in the flavor increases past that point anyway

Frequently Asked Questions

How long does it take to grow Sorrel microgreens?▼

Sorrel microgreens are ready to harvest in approximately 10 days. They produce some of the earliest greens of spring and the latest of fall, making them a quick-turnaround crop. The tender, fresh green leaves develop rapidly under proper conditions, offering fast results for microgreen growers.

What does Sorrel microgreen taste like?▼

Sorrel microgreens have an intense lemony flavor that makes them distinctive. The tender leaves offer a bright, acidic, and slightly tangy taste. This unique flavor profile works especially well in cocktails, soups, sauces, and fish dishes, where the tartness complements other ingredients beautifully.

Is Sorrel a good choice for beginner microgreen growers?▼

Yes, Sorrel is an excellent choice for beginners. It's classified as easy to grow and produces quick harvests in just 10 days. The hardy nature and reliable germination make it forgiving for new growers, while the intense lemony flavor and versatile uses provide rewarding results.

When should I plant Sorrel microgreens?▼

Sorrel can be planted year-round for microgreens, but it naturally produces some of the earliest greens in spring and the latest in fall. As a perennial variety that's hardy in Zones 4-9, it's particularly well-suited for cool season growing, though microgreens can be harvested anytime with indoor cultivation.

How should I use Sorrel microgreens in cooking?▼

Sorrel microgreens are versatile in the kitchen. Use them sparingly in salads as a garnish to avoid overpowering dishes with their intense lemony flavor. For more prominent use, add them generously to cocktails, soups, and sauces. They pair exceptionally well with fish and seafood dishes, where their bright acidity enhances the meal.

How much sunlight do Sorrel microgreens need?▼

Sorrel microgreens prefer full sun, requiring at least 6 or more hours of direct sunlight daily. This ensures proper development of the tender green leaves and enhances their flavor intensity. If growing indoors, provide equivalent grow light exposure for optimal results.