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Corn Microgreens

Zea mays

7-8" ears with glossy deep yellow kernels. A high percentage of kernels pop producing tender popcorn. 8-9' plants.

Harvest

112d

Days to harvest

📅

Sun

Full sun

☀️

Zones

2–11

USDA hardiness

🗺️

Height

5-8 feet

📏

Planting Timeline

Zone:

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Start Indoors

Harvest

Start Indoors

Harvest

Showing dates for Corn Microgreens in USDA Zone 7

All Zone 7 microgreen →

Zone Map

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Corn Microgreens · Zones 2–11

What grows well in Zone 7? →

Growing Details

Difficulty

Moderate

SpacingDense broadcast seeding

SoilSoilless growing medium or quality potting mix

pH6.0-7.0

WaterHigh — consistent moisture needed

SeasonWarm season annual

FlavorSweet corn flavor with crunchy texture and mild grassy notes

ColorPale yellow to light green shoots

Size7-8"

Zone-by-Zone Planting Calendar

Zone	Indoor Start	Transplant	Direct Sow	Harvest
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

Complete Growing Guide

Light: Full sun (6 or more hours of direct sunlight a day). Soil: Clay, High Organic Matter, Loam (Silt). Soil pH: Acid (<6.0), Neutral (6.0-8.0). Drainage: Good Drainage. Height: 5 ft. 0 in. - 8 ft. 0 in.. Spread: 1 ft. 0 in. - 2 ft. 0 in.. Spacing: 12 inches-3 feet. Growth rate: Rapid. Maintenance: Medium. Propagation: Seed. Regions: Coastal, Mountains, Piedmont.

Harvesting

Color: Gold/Yellow. Type: Caryopsis. Length: > 3 inches. Width: 1-3 inches.

Garden value: Edible, Showy

Harvest time: Fall

Bloom time: Summer

Edibility: Edibile

Storage & Preservation

Fresh corn microgreens are highly perishable and best used immediately after harvest. Store them in the refrigerator at 35-40°F in a breathable container lined with paper towels to absorb excess moisture. They'll maintain peak quality for 3-5 days, though the characteristic crunch diminishes after day three.

For short-term storage, place stems in a glass of water like fresh herbs, covering loosely with a plastic bag. Change water every two days to prevent bacterial growth.

Corn microgreens can be flash-frozen for up to three months, though they lose their signature crunch. Blanch quickly in boiling water for 30 seconds, shock in ice water, drain thoroughly, and freeze in single-use portions. Frozen corn microgreens work well blended into smoothies or incorporated into cooked dishes. Dehydrating is another option—dry at 95°F until crisp for a concentrated corn flavor that works as a unique garnish or seasoning.

History & Origin

Origin: Mexico

Advantages

+Disease resistance: Black Walnut
+Edible: Edibile
+Fast-growing

Companion Plants

Plant Together

Basil

Repels aphids and thrips that commonly affect corn microgreens

Marigolds

Natural pest deterrent against aphids and fungus gnats in growing trays

Chives

Antimicrobial properties help prevent damping-off disease in seedlings

Lettuce Microgreens

Similar growing requirements and compatible root systems in shared trays

Radish Microgreens

Fast germination helps break soil crust, improving corn microgreen emergence

Pea Microgreens

Nitrogen-fixing bacteria in pea roots benefit corn's nitrogen requirements

Cilantro

Natural fungicide properties help prevent mold in humid microgreen environments

Mint

Deters ants and rodents that may disturb growing trays

Keep Apart

Fennel

Allelopathic compounds inhibit germination and growth of corn seeds

Black Walnut

Juglone toxicity severely stunts corn microgreen development

Eucalyptus

Essential oils suppress seed germination and early seedling growth

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)

Pests & Disease Resistance

Resistance

Generally resistant when grown as microgreens

Common Pests

Minimal indoor pest issues

Diseases

Damping-off, root rot if overwatered

Frequently Asked Questions

How long do corn microgreens take to grow?▼

Corn microgreens typically take 7-12 days from seed to harvest. They require 3-4 days in complete darkness for germination, then 4-8 additional days under indirect light. Harvest timing depends on your preference—earlier harvests (day 7-8) yield more tender shoots, while later harvests (day 10-12) develop stronger corn flavor and crunch.

Do corn microgreens taste like actual corn?▼

Yes, corn microgreens have a distinctly sweet corn flavor with remarkable similarity to fresh corn kernels. They offer concentrated corn taste in a tender, juicy form with added grassy notes. The flavor is sweeter and more delicate than mature corn, making them popular with chefs for adding natural sweetness and familiar corn taste to dishes.

Why won't my corn microgreens germinate?▼

Poor germination usually results from inadequate seed soaking or exposure to light too early. Corn seeds need 8-12 hours of pre-soaking and complete darkness for the first 3-4 days. Other factors include old seeds, temperatures outside the 65-75°F range, or overwatering which causes seeds to rot before sprouting.

Can you grow corn microgreens without soil?▼

Yes, corn microgreens grow well in soilless mediums like coconut coir, hemp mats, or hydroponic setups. However, avoid very thin growing mats since corn microgreens are larger and need more root space than leafy varieties. Coconut coir or quality seed starting mix provides optimal drainage and root support for healthy growth.

Are corn microgreens good for beginners?▼

Corn microgreens have moderate difficulty due to their specific requirements—extended darkness period, mandatory seed soaking, and susceptibility to damping-off disease. Beginners should start with easier varieties like radish or pea shoots, then progress to corn microgreens once comfortable with basic microgreen growing techniques and environmental controls.

Can I regrow corn microgreens after harvesting?▼

No, corn microgreens cannot regrow after cutting. Unlike some microgreens that produce multiple harvests from the same planting, corn microgreens are single-harvest crops. Once cut, you'll need to replant with fresh seeds for your next crop, making succession planting important for continuous harvests.