Fennel illustration

Fennel Growing Guide

Apiaceae family

Days to Harvest65 days
SunlightFull Sun
Frost ToleranceLight
Spacing12/sqft
Germination7-14 days
HardinessSemi Hardy
Germ. Temp65°F
Start Indoors4 weeks before last frost

Companion Planting

Avoid Planting Near

TomatoesPeppersBeansEggplantKohlrabi

Growth Stages

  1. Seedling
  2. Establishing
  3. Mature / Harvest Ready

Planting Dates by Zone

Zone 1aZone 1bZone 2aZone 2bZone 3aZone 3bZone 4aZone 4bZone 5aZone 5bZone 6aZone 6bZone 7aZone 7bZone 8aZone 8bZone 9aZone 9bZone 10aZone 10bZone 11aZone 11bZone 12aZone 12bZone 13aZone 13b

Frequently Asked Questions

How long does it take to grow Fennel?

Fennel takes approximately 65 days from planting to harvest.

How much sun does Fennel need?

Fennel requires full sun (6+ hours direct sunlight per day).

How far apart should I plant Fennel?

Plant Fennel at 12/sqft using square foot gardening spacing.

Can Fennel survive frost?

Fennel is tolerant of light frost.

What are good companion plants for Fennel?

Good companion plants for Fennel include Dill. Avoid planting near Tomatoes, Peppers, Beans, Eggplant, Kohlrabi.

How long does Fennel take to germinate?

Fennel seeds germinate in 7-14 days at an optimal temperature of 65°F.

When should I start Fennel seeds indoors?

Start Fennel seeds indoors 4 weeks before your last frost date, then transplant -1 weeks after last frost.

Plan Your Fennel Garden

Track Fennel from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

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