
In the Netherlands, fennel is in season June to October, at its best in August and September. November is outside the Dutch season for fennel.
Bulb fennel is a Dutch field crop from June to October. Winter fennel comes from Italy.
White, tight bulbs with fresh green fronds.
Vitamin C, potassium and fibre, with anethole, the aniseed-scented oil. Around 90 percent water with potassium: hydrating, with electrolytes.
To get the most: Raw, thinly sliced, keeps the vitamin C; roasting trades it for sweetness.
On our nutrient density chart, a normal serving of fennel (100 g) gives about three-quarters of a day's vitamin K and about a tenth of a day's potassium, counting what your body absorbs.
Content per NEVO, the Dutch food composition database. This describes what the food contains, not what it does for you.
Slice thinly for a salad with orange, or quarter and roast until caramelised. The fronds go in at the end.
Fronds are a herb, the tough outer layer and core go into stock, and the stalks can be roasted or grilled.
10 producers in The Field Guide sell fennel, according to their own website or shop list, each checked against our inclusion criteria and listed by province. Another 168 growers passed our bar for this food group; we have not yet recorded what each of them grows, so ask them or search the map.
Open on the map →Dates read on 2026-10-11. If a window on this page is wrong, tell us with a source.
guideWhy choose local and seasonal food?Food picked ripe in its own season carries more vitamins, travels days instead of weeks and keeps good farms in business. Twelve reasons, with the evidence.Read the guide →
A free list of what’s in season this month, then one slow email a month with seasonal tips and goodies.