Microgreens
16-25days to harvest
7-10 daysdays to germinate
Z4–9USDA zones
Easydifficulty
Heirloom

Sowing

Direct sow densely on moist substrate in shallow trays; cover for darkness during germination until sprouts emerge

Cultivation

Sun
Full sun to partial shade (4-6+ hours)
Water
Consistent moisture; keep substrate damp but not waterlogged
Soil
Seed-starting mix, potting mix, or coconut coir
Spacing
Not applicable for microgreens (dense sowing)
Height
1-3 feet
Season
Warm season annual

Appearance & flavour

Colour
Bright green
Shape
Thread-like leaves
Flavour
Mild, delicate onion flavor with subtle pungency—refined and sophisticated without sharp bite, fresh and slightly sweet

In the kitchen

Garnish for soups, salads, Asian dishes, plated presentations; microgreen salad mixes

Pests, disease & resistance

Pests
Fungus gnats, spider mites (rare in microgreens); primarily a concern only if debris or old substrate is present
Diseases
Damping off (prevented by proper ventilation and moisture control), mold (prevented by air circulation and avoiding overwatering)

Planting calendar by USDA zone

ZoneStart indoorsTransplantDirect sowHarvest
1January – December——January – December
2January – December——January – December
3January – December——January – December
4January – December——January – December
5January – December——January – December
6January – December——January – December
7January – December——January – December
8January – December——January – December
9January – December——January – December
10January – December——January – December
11January – December——January – December
12January – December——January – December
13January – December——January – December

Companion planting

8 beneficial pairings indexed for this variety, 3 to avoid.

BasilRepels aphids and thrips that commonly attack scallions, enhances growth
CarrotsScallions repel carrot flies while carrots help break up soil for shallow scallion roots
TomatoesScallions deter aphids and spider mites from tomatoes, improve tomato flavor
LettuceSimilar water and nutrient needs, scallions provide natural pest deterrent for lettuce
CabbageScallions repel cabbage worms and flea beetles that damage brassicas
SpinachCompatible growth habits and nutrient requirements, mutual pest protection
MarigoldsAttract beneficial insects and repel nematodes that can damage scallion roots
ParsleySimilar growing conditions, both herbs complement each other's pest-repelling properties

Avoid

BeansNitrogen fixation can cause excessive leaf growth in scallions at expense of bulb development
PeasHeavy nitrogen production leads to weak, overly leafy scallion growth
SageStrong allelopathic compounds can inhibit scallion germination and growth

Nutrition (per 100 g)

Calories (per 100 g)
32
Protein (g)
1.83
Fat (g)
0.19
Carbohydrate (g)
7.34
Fibre (g)
2.6
Sugars (g)
2.33
Vitamin A (µg)
50
Vitamin C (mg)
18.8
Vitamin E (mg)
0.55
Vitamin K (µg)
207
Vitamin B6 (mg)
0.061
Folate (µg)
64
Calcium (mg)
72
Iron (mg)
1.48
Magnesium (mg)
20
Phosphorus (mg)
37
Potassium (mg)
276
Zinc (mg)
0.39
Selenium (µg)
0.6

Where to buy seed and equipment

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Growing it? There is a full cultivation guide at the microgreens growing guide.

Cultivar facts compiled from public horticultural references including USDA GRIN and NC State Extension. Descriptions are original to this catalogue.

DarkGrow forum

Grown Scallion, Evergreen Hardy White?

Post a crop report — day counts, reservoir readings, what worked. Variety-specific logs are the most useful thing on the forum.

Similar varieties

Other microgreens with a comparable time to harvest, so a season that suits Scallion, Evergreen Hardy White suits these too.

Browse all 57 microgreens