Chervil

1. 1

   Sow direct, not in modules

   Chervil has a long taproot and resents transplanting. Sow seed direct where you want the plants to grow, in moist soil. If you must start indoors, use deep root-trainer cells (10+ cm deep) and plant out before roots reach the bottom. Standard module trays don't give enough depth — transplants bolt to flower within 2 weeks.

2. 2

   Sow successionally, March to September

   Chervil bolts quickly in heat — successional sowing is the only way to keep tender foliage going. Three windows for the best supply: (1) Early spring sowings (March–April) for May–June cropping. (2) Skip the hot midsummer months (June–early August) — chervil bolts immediately. (3) Late summer sowings (mid-August–September) for autumn cropping AND overwintered plants that crop early next spring (March–April).

3. 3

   Plant in part shade and moist soil

   Chervil's defining preference: cool, damp, part shade. Full sun + dry soil = instant bolting and tough bitter leaves. Ideal positions: north-facing borders, woodland edges, under deciduous shrubs (after their leaves emerge), shady allotment corners. Moisture-retentive soil enriched with garden compost. Tolerates clay if not waterlogged.

4. 4

   Sow shallow and thin

   Surface-sow or barely cover seed (1 cm max — chervil needs light to germinate). Germination is slow for chervil — 14–21 days at 10–15°C, slower in cold soil. Be patient before assuming the seed has failed. Thin seedlings to 20 cm apart when they have 3–4 true leaves.

5. 5

   Water consistently

   Chervil bolts in dry conditions. A weekly soak in dry spells keeps the leaves tender and the plant in leaf-production mode. Mulch with leaf-mould or fine compost in spring to conserve moisture. Pot-grown chervil needs daily watering in summer.

6. 6

   Pick continuously from 6 weeks

   From 6 weeks after sowing, pick whole stems just above a side-shoot rather than picking individual leaves. The plant branches and re-grows. Strongest flavour is on the youngest growth — pick the tips, leave the older lower leaves which get tough and bitter. Continuous picking + watering = continuous fresh foliage until the plant bolts.

7. 7

   Use fresh, never dried

   The most important chervil rule. Chervil's delicate aniseed-parsley flavour is in volatile oils that fade dramatically with drying — dried chervil tastes of nothing. Even cooking destroys the flavour — add chervil at the very end, after the heat is off, just before serving. Classic uses: omelettes, fish, asparagus, herb butter, fines herbes mix (with parsley, tarragon, chives). Chop just before adding.

8. 8

   Let some plants flower for self-seeding

   Chervil produces small white umbel flowers when it bolts. Let the late-summer/early-autumn plants flower and self-seed — chervil establishes self-seeding colonies in shady corners (like wild chervil naturally does in UK woodland). The self-sown seedlings appear the following spring and give the easiest, most reliable continuous chervil supply. Cut flower stems before seed sets if you want to limit spread.

Few pest issues; may attract some aphids but generally trouble-free.