Vegetable
Florence fennel
Foeniculum vulgare var. azoricum Β· also Bulb fennel, Finocchio
Grown for its swollen, aniseed-flavoured leaf base. In Adelaide it does best sown in late summer and autumn, maturing in the cool months; spring sowings often bolt in the heat. Wild fennel is a weed in SA, so never let plants go to seed.
- SunFull sun
- Spacing30 cm apart
- First pick11β16 weeks
- FrostHandles light frost
- HeatStruggles in heat
- Sow depth10 mm
When to plant where you live
Checking your areaβ¦
Add florence fennel to my gardenVarieties (3)
- FlorenceThe standard bulb fennel sold by most Australian seed companies
- LeoneLarge rounded bulbs
- Zefa FinoSlow to bolt; good for less ideal sowing times
Neighbours
Keep away from
From seed to plate
Plant
30 cm apart, rows 50 cm, seed 10 mm deep. Full sun.
Water
Water regularly; never let it dry out.
Feed
Compost before sowing, then liquid feed.
Pick, from about 11 weeks
Cut bulbs at tennis-ball size.
Good to know
- Sow where it is to grow; it dislikes transplanting
- Hill soil around the bulb once it is golf-ball size to blanch it and soften the flavour
- Remove any flower stems straight away; fennel self-seeds and wild fennel is a weed in SA
- Snip the feathery leaves as a herb while the bulb grows
Common problems
- Boltingcaused by heat, long days or dry spells; sow from late summer to autumn and keep watered
- Snails and slugs on stemshand pick at night, use beer traps
- Aphidshose off, encourage ladybirds
If you use a garden chemical, follow the label exactly. Try organic options first, and ask the community or Plant Doctor if you're unsure.
Wildlife
Good for: bees, butterflies.
Where this information comes from
- ABC Gardening Australia plant finder: Florence Fennel (growing, medium confidence, checked 29 Oct 2026)
- Yates Australia: How to grow fennel (sowing window, medium confidence, checked 29 Oct 2026)
- ASPCA Animal Poison Control: Fennel (toxicity, high confidence, checked 29 Oct 2026)
- Sustainable Gardening Australia: growing culinary herbs (fennel as a garden escapee) (weed status, low confidence)
Reviewed by AI cross-check (Claude), not a horticulturist on 29 Oct 2026. Version 1.