16-25days to harvest
7-14days to germinate
Z4–9USDA zones
Easydifficulty
HeirloomContainer friendly

Sowing

Direct sow in spring after last frost or fall. Does not transplant well due to taproot. Allow some plants to self-seed.

Cultivation

Sun
Full sun (6+ hours)
Water
Low to moderate, drought tolerant once established
Soil
Well-drained, fertile soil, tolerates poor soils
Soil pH
6.0-8.0
Spacing
12-18 inches
Height
4-6 feet
Season
Warm season annual

Appearance & flavour

Colour
Bronze-purple feathery foliage with yellow umbrella-shaped flowers
Size
Fine, thread-like leaves, flowers in 4-6 inch umbels
Shape
Tall, upright perennial with feathery, fern-like foliage
Flavour
Sweet anise or licorice flavor with aromatic intensity, similar to dill but sweeter

In the kitchen

Fish dishes, Mediterranean cuisine, salads, herb blends, seeds for baking and tea, flowers as garnish

Pests, disease & resistance

Pests
Aphids, swallowtail butterfly caterpillars (which are beneficial for butterfly gardens)
Diseases
Crown rot in poorly drained soils, otherwise very disease resistant
Resistance
Generally disease resistant, very hardy

Planting calendar by USDA zone

ZoneStart indoorsTransplantDirect sowHarvest
4March – AprilJune – July—July – October
5March – AprilMay – June—June – October
6March – AprilMay – June—June – November
7February – MarchApril – June—June – November
8February – MarchApril – May—May – December
9January – FebruaryMarch – April—April – December

Companion planting

8 beneficial pairings indexed for this variety, 4 to avoid.

DillBoth are umbellifer family members that attract beneficial insects like lacewings and parasitic wasps
CorianderAnother umbelliferous herb that shares similar growing conditions and attracts predatory insects
NasturtiumActs as a trap crop for aphids and adds beneficial ground cover
MarigoldRepels nematodes and various garden pests while attracting beneficial pollinators
ChivesHelps repel aphids and other soft-bodied insects that may attack fennel
LettuceBenefits from fennel's pest-repelling properties and doesn't compete for nutrients
CucumberFennel may help deter cucumber beetles and other cucumber pests
CabbageFennel helps repel cabbage moths and other brassica pests

Avoid

TomatoFennel may inhibit tomato growth and can negatively affect fruit development
BeanFennel's allelopathic compounds can stunt bean growth and reduce nitrogen fixation
KohlrabiDespite helping other brassicas, fennel can inhibit kohlrabi's bulb development
CarawayBoth herbs can cross-pollinate and may compete aggressively for similar resources

Nutrition (per 100 g)

Calories (per 100 g)
23
Protein (g)
3.15
Fat (g)
0.64
Carbohydrate (g)
2.65
Fibre (g)
1.6
Sugars (g)
0.3
Vitamin A (µg)
264
Vitamin C (mg)
18
Vitamin E (mg)
0.8
Vitamin K (µg)
415
Vitamin B6 (mg)
0.155
Folate (µg)
68
Calcium (mg)
177
Iron (mg)
3.17
Magnesium (mg)
64
Phosphorus (mg)
56
Potassium (mg)
295
Zinc (mg)
0.81
Selenium (µg)
0.3

Where to buy seed and equipment

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Growing it? There is a full cultivation guide at the herbs 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 Fennel Bronze?

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

Similar varieties

Other herbs with a comparable time to harvest, so a season that suits Fennel Bronze suits these too.

Browse all 104 herbs