Why does my chervil bolt so fast?

Heat + dry soil + full sun. Chervil is a cool-season annual that bolts immediately in summer. Four strategies for longer cropping: (1) Sow in part shade, not full sun. (2) Sow in cool months (March–April for spring, August–September for autumn/winter) — skip June and July entirely. (3) Keep the soil consistently moist — chervil bolts in drought. (4) Use successional sowing every 3 weeks during the cool months. Most UK gardeners grow chervil for spring and autumn use; summer chervil supply is hard to maintain.

When can I pick chervil?

From 6 weeks after sowing, before the plant flowers. Pick whole stems at the base of new growth — the plant branches and re-grows. Strongest flavour is on the youngest tender shoots; older leaves get tough and bitter. Stop picking once the plant bolts — flowering chervil has tough stems and bitter leaves. Year-round cropping is possible in southern UK with autumn-sown plants that overwinter and give March–April leaves before going to seed.

No — chervil loses almost all flavour when dried. The delicate aniseed-parsley aroma is in volatile oils that fade dramatically with any drying method. Two preservation options. (1) Freeze fresh chervil chopped into ice cubes with water or olive oil — keeps reasonably well for 3 months. (2) Plant successional sowings for fresh use across most of the year. Don't bother with dried chervil from shops — it's flavourless. Fresh chervil is the only chervil worth using.

What does chervil taste like?

Delicate aniseed-parsley — a refined, sweet, slightly aromatic version of parsley with a clear anise note. Much softer than tarragon (which has a stronger aniseed punch). The flavour is delicate enough to be used in larger quantities than most herbs — a tablespoon of fresh chopped chervil per dish rather than a teaspoon. Cooking destroys the flavour — add chervil at the very end, just before serving. Classic uses: omelettes (the French herb-omelette star), fish sauces, asparagus, herb butter, the fines herbes mix.

When and how do I sow chervil for year-round use?

Three sowing windows. (1) March–April: direct sow for May–June cropping. (2) August–September: direct sow for autumn cropping AND plants that overwinter and give early-spring leaves in March–April. (3) Successional sowing every 3 weeks during the cool months extends each window. Skip June and July entirely — chervil bolts immediately in heat. Sow shallow (chervil needs light to germinate), in part shade, in moist soil.

Can chervil grow in a pot?

Yes — and pots make slug control and part-shade positioning easier. Use a 25–30 cm pot of peat-free compost. Sow direct into the pot (don't transplant). Position in part shade — under a north-facing windowsill, or in a shady corner of the garden. Water consistently to keep the compost evenly moist. Pot chervil bolts faster in hot weather than ground-planted; sow successionally and accept the shorter individual-pot lifespan. One pot lasts about 6 weeks before bolting.

Cerfoglio

Anthriscus cerefolium

Sow chervil direct from March to September, in part shade in moist soil — it's a hardy annual/biennial that loves cool damp conditions and bolts straight to flower in heat or full sun. Chervil is hardy (RHS H6) — sown in late summer it overwinters as small plants and gives an early-spring flush, while spring-sown chervil crops from May to early summer before bolting. Don't transplant — long taproot resents disturbance; sow direct or use deep modular cells. Pick young feathery foliage continuously for the delicate aniseed-parsley flavour that defines French cooking — chervil is one of the classic fines herbes alongside parsley, tarragon, and chives. Use fresh always — chervil loses flavour completely when dried, and even cooking destroys the delicate aroma. Add at the very end of cooking, just before serving.

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