HeirloomContainer OK

Fennel Microgreens

Foeniculum vulgare

Vigorous and uniform strain is slow to bolt. Nonbulbing type. Leaves are a nice addition to salads, coleslaws, and dressings.Flavor in fennel develops and intensifies as plants mature. Very young plants (baby-leaf stage) will have a mild flavor, while mature plants (8-12" tall) will have a fuller fennel flavor. Edible Flowers: The florets are used to garnish savory dishes, and pair well with fish, potato, tomato, and beef dishes. Flavor is of sweet anise.USDA Certified Organic.

Harvest

50-60d

Days to harvest

📅

Sun

Full sun

☀️

Zones

4–9

USDA hardiness

🗺️

Height

4-6 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 Fennel Microgreens in USDA Zone 7

All Zone 7 microgreen →

Zone Map

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Fennel Microgreens · Zones 4–9

What grows well in Zone 7? →

Growing Details

Difficulty

Moderate

SpacingDense sowing, 1-1.5 tablespoons per 10x20 tray

SoilFine seed starting mix with good drainage

pH6.0-7.0

WaterKeep evenly moist, mist regularly but avoid overwatering

SeasonTender Perennial

FlavorStrong anise-licorice flavor, aromatic and intense

ColorBright green feathery foliage

Size8-12"

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), Sand. Soil pH: Acid (<6.0), Alkaline (>8.0), Neutral (6.0-8.0). Drainage: Good Drainage, Moist, Occasionally Dry. Height: 4 ft. 0 in. - 6 ft. 0 in.. Spread: 1 ft. 6 in. - 3 ft. 3 in.. Spacing: Less than 12 inches. Maintenance: Low. Propagation: Seed. Regions: Coastal, Mountains, Piedmont.

Harvesting

Aromatic seeds follow the flowers in late summer, early fall.

Color: Green, White.

Garden value: Edible, Fragrant

Harvest time: Fall

Bloom time: Summer

Storage & Preservation

Fresh fennel microgreens are highly perishable and best used within 3-5 days of harvest. After cutting, gently rinse in cool water and spin dry in a salad spinner or pat dry with paper towels, being careful not to crush the delicate stems.

Store in the refrigerator at 35-40°F in a sealed container lined with paper towels to absorb excess moisture. Change the paper towels if they become damp. Never store wet microgreens, as they'll quickly develop bacterial soft rot.

For longer storage, fennel microgreens can be gently dehydrated at low temperatures (95-105°F) to preserve their anise flavor for use as a seasoning herb. They lose their fresh texture but retain much of their aromatic intensity.

Freezing isn't recommended for fennel microgreens as their high water content and delicate structure make them mushy when thawed. Instead, consider making fennel-infused oils or vinegars with fresh microgreens—chop and steep in olive oil for 2-3 days, then strain for a flavorful finishing oil that captures their essence.

History & Origin

Origin: Southern Europe and the Mediterranean

Advantages

+Disease resistance: Deer, Diseases, Drought, Heat, Humidity, Insect Pests, Poor Soil
+Attracts: Wildlife Food Source
+Wildlife value: Attracts bees and other beneficial insects, feeds caterpillars that morph into swallowtail butterflies.
+Low maintenance

Companion Plants

Plant Together

Dill

Both are umbellifer family plants that grow well together and attract beneficial insects

Cilantro

Compatible growth rates and both benefit from similar growing conditions

Chives

Natural pest deterrent that protects fennel microgreens from aphids and fungus gnats

Lettuce

Shallow roots don't compete and fennel's aromatic oils may deter lettuce pests

Spinach

Similar water and light requirements, spinach benefits from fennel's pest-repelling properties

Arugula

Fast-growing brassica that pairs well with fennel's growth cycle and pest protection

Parsley

Fellow umbellifer that thrives in similar conditions and attracts beneficial predatory insects

Radish Microgreens

Quick germination companion that helps break soil crust and deters root maggots

Keep Apart

Tomato

Fennel's allelopathic compounds inhibit tomato growth and development

Bean Sprouts

Fennel compounds can stunt legume growth and interfere with nitrogen fixation

Carrot

Despite being related, fennel can inhibit carrot seed germination and root development

Kohlrabi

Fennel's allelopathic effects particularly suppress brassica root vegetables

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

Good disease resistance when properly ventilated

Common Pests

Aphids, fungus gnats (indoor growing)

Diseases

Damping-off, root rot from overwatering

Frequently Asked Questions

How long do fennel microgreens take to grow?▼

Fennel microgreens take 10-16 days from seed to harvest. They germinate in 3-5 days after sowing, then need another week to develop their characteristic feathery leaves and intense anise flavor. Harvest timing depends on your preference - younger greens at 10-12 days are milder, while 14-16 day harvests have maximum flavor intensity.

Do fennel microgreens taste like licorice?▼

Yes, fennel microgreens have a pronounced anise-licorice flavor that's quite intense despite their small size. The taste is similar to fresh fennel fronds but more concentrated. This strong flavor makes them excellent for seasoning fish dishes, Mediterranean cuisine, and as aromatic garnishes, but they may be too intense for those who dislike licorice flavors.

Why won't my fennel microgreen seeds germinate?▼

Fennel seeds have natural germination inhibitors and lower germination rates than most microgreens. Always soak seeds for 8-12 hours before planting to improve germination from 50-60% to 70-85%. Ensure consistent moisture during the 3-5 day germination period, maintain temperatures between 65-75°F, and keep seeds covered in darkness until sprouting begins.

Can you regrow fennel microgreens after cutting?▼

No, fennel microgreens cannot regrow after harvesting like some cut-and-come-again crops. When you cut the stems above the soil level, the plants don't have enough stored energy in their seed leaves to produce new growth. You'll need to start fresh seeds for each new crop, which is why succession planting every few days ensures continuous harvests.

Are fennel microgreens good for beginners?▼

Fennel microgreens are moderately challenging for beginners due to their lower germination rates and susceptibility to damping-off disease. Start with easier varieties like radish or pea shoots first to learn basic techniques. Once comfortable with microgreen growing, fennel's seed soaking requirement and need for careful moisture management make it a good next-step variety.

What's the best way to prevent damping-off in fennel microgreens?▼

Prevent damping-off by ensuring excellent drainage in your growing medium, providing good air circulation with a small fan, and avoiding overwatering. Water from below rather than misting the leaves directly, maintain temperatures around 65-70°F, and don't overcrowd seeds. If you notice fuzzy growth or collapsed seedlings, increase ventilation and reduce watering immediately.