🥬

Kale Microgreens

Brassica oleracea var. sabellica

Brassica🟢 Easy📅 8-12 days to harvest

Overview

Kale microgreens take the nutritional superstar status of mature kale and compress it into a tender, mild, and far more versatile form. While mature kale can be tough, fibrous, and intensely flavored (requiring massage, cooking, or aggressive preparation), kale microgreens are soft, delicate, and surprisingly mild — making the 'king of greens' accessible to those who find the adult version challenging.

Kale microgreens produce thin stems (usually pale green or occasionally purple for Red Russian varieties) topped with small, rounded cotyledon leaves. They lack the curly or dinosaur-skin texture of mature kale — the cotyledon stage looks nothing like the adult plant. Colors range from bright green (curly kale, Dwarf Siberian) to rich purple-green (Red Russian, Scarlet Kale). The Red Russian variety is particularly popular as a microgreen for its striking purple stems and deep-green leaves.

As a Brassica, kale microgreens share the glucosinolate-rich genetics of broccoli, radish, and cabbage. They offer an excellent middle ground: more nutrient-dense than many mild greens, but without the aggressive pepperiness of radish or mustard. This makes them a versatile, everyday microgreen that works in virtually any context.

Flavor Profile

MildGreenSlightly sweet
Faintly earthyVery subtle brassica biteClean

Texture: Tender and soft — much more delicate than mature kale

Mouthfeel: Smooth and gentle with none of the toughness or bitterness of mature kale. Dissolves easily. The mild flavor makes it a crowd-pleaser.

Aroma

Mild and clean with a faint green, earthy scent. Much less aromatic than herbs or peppery Brassicas. When a tray is agitated, there's a subtle, fresh chlorophyll smell — pleasant and unobtrusive.

Nutrition Facts

Nutrition Facts

Per 100g serving

Calories26
% Daily Value*
Total Fat 0.5g1%
Total Carbohydrate 3.8g1%
Dietary Fiber 1.4g5%
Protein 2.5g5%
Vitamin A 4100 IU137%
Vitamin C 42mg47%
Vitamin K 276mcg230%
Vitamin E 3.2mg21%
Iron 1.5mg8%
Calcium 72mg6%
Potassium 312mg7%

* Percent Daily Values are based on a 2,000 calorie diet. Values are approximate for microgreen stage.

Notable Phytonutrients

SulforaphaneIndole-3-carbinolKaempferolQuercetinLuteinBeta-carotene

Antioxidant capacity: Very high — exceptional lutein and beta-carotene levels

Health Benefits

Kale microgreens deliver concentrated glucosinolates, the same cancer-fighting compounds that made mature kale famous in nutrition circles. The high lutein content supports eye health and may reduce macular degeneration risk. Vitamin K levels are extraordinary (276 mcg/100g), supporting bone density and cardiovascular health. The kaempferol content has demonstrated anti-inflammatory, anti-cancer, and cardioprotective effects in numerous studies. Research in the journal Nutrition and Cancer found that kale-family plants may reduce the risk of bladder, breast, colon, liver, lung, and stomach cancers.

Growing Guide

🌱 Quick Growing Reference

📅
Days to Harvest
8-12
🌡️
Ideal Temperature
60-70°F
💡
Light Needs
Low to medium
🧱
Growing Medium
Soil, coconut coir, or hydroponic mats
💧
Seed Soak
None required
🌑
Blackout Period
3-4 days
🌱
Seeding Density
Medium-heavy
💡 Notes

Red Russian variety produces the most visually appealing microgreens. Cooler temperatures enhance color development in red/purple varieties.

Seed Sourcing Standards

Kale microgreen seed sourcing is built around vigor, color depth, and dry-pack performance. We select lots that produce strong hypocotyls, uniform cotyledons, and clean tray-level emergence so harvest crews can cut fast without over-sorting.

Beyond organic and non-GMO requirements, we evaluate how each lot performs in mixed packs and standalone packs. Any lot that introduces size drift, weak stems, or inconsistent color is flagged and replaced before it can affect customer consistency.

Preferred Supplier Watchlist

Johnny's Selected SeedsTrue Leaf MarketMumm's Sprouting SeedsFedco SeedsHigh Mowing Organic Seeds

Culinary Uses

Kale microgreens work everywhere you want nutrition without strong flavor. Add them to smoothies (they blend seamlessly), top sandwiches and wraps, scatter on soups, fold into omelets, and mix into salads. They're excellent in grain bowls and on avocado toast. Their mild flavor makes them perfect for kid-friendly applications — parents hide them in pasta sauce, scrambled eggs, and even muffin batter. Chefs use them as a subtle, nutritious garnish that doesn't compete with the main dish. They pair well with virtually everything.

Buyer Expectations

Kale microgreens are a dependable premium staple when sizing is consistent. Buyers expect sturdy stems, low shrink, and balanced flavor that works in both retail and foodservice lanes.

Kale buyers usually expect vibrant color, crisp stems, and a clean aroma profile that matches its signature mild, green, slightly sweet notes.

For retail and wholesale, consistency matters: even cut, dry packaging condition, and reliable harvest timing around 8-12 days so quality and shelf confidence remain predictable.

Chef Notes

Chefs use kale microgreens as a reliable utility green with stronger character than lettuce. They perform best as structure in grain bowls, egg dishes, and composed salads.

Treat kale as a finishing ingredient first and a cooked component second unless the dish specifically calls for heat.

Use gentle handling during prep, keep portions dry and chilled, and plate close to service to protect texture and visual lift. Store at 38-40°F in a sealed container with a dry paper towel. Shelf life is 8-12 days — kale microgreens are among the longer-lasting varieties thanks to their Brassica genetics. Red/purple varieties may show some color fading after a week but remain nutritious and safe to eat.

Microgreen vs. Mature Plant

Kale microgreens concentrate nutrients at approximately 5 to 6 times the density of mature kale leaves per gram. The USDA lists mature raw kale at 49 calories/100g with 4.3g protein and 254 mcg vitamin K. The microgreen delivers comparable vitamin K but at nearly half the calories, with significantly higher vitamin E and beta-carotene concentrations. The key advantage: kale microgreens are dramatically more tender and palatable.

Popular Mixes

🌿 Power Greens Mix🌿 Mild Mix🌿 Health Mix🌿 Rainbow Mix

Storage Tips

Store at 38-40°F in a sealed container with a dry paper towel. Shelf life is 8-12 days — kale microgreens are among the longer-lasting varieties thanks to their Brassica genetics. Red/purple varieties may show some color fading after a week but remain nutritious and safe to eat.

💡 Fun Fact

Mature kale has been called the "queen of greens" but kale microgreens may deserve the crown even more: they deliver the same nutrients in a form that's 5-6x more concentrated and infinitely more pleasant to eat raw. In the 2012 USDA microgreens study, kale was among the top performers for both vitamin C and beta-carotene concentration.