When to plant Chervil in Temperate Australia

Temperate zone — applies to Sydney, Melbourne, Adelaide, Perth, Newcastle and similar areas. Growing elsewhere? Cool · Subtropical · Tropical · Arid.

Sow Chervil direct where it is to grow, using its broad windows of January to April and August to December to avoid the hottest months. Seed germinates in 14–21 days and should be sown at 6–10 mm, then thinned to about 30 cm apart with 20–25 cm between rows. This fast, delicate herb is ready to pick in just 50–70 days, so successive small sowings keep fresh leaves coming. In cooler-shaded corners of Sydney, Melbourne and Adelaide gardens it stays tender and green far longer than it would in full summer sun.

Sowing calendar — temperate zone

Green months are your sowing window: August to April.

Growing notes

Chervil is a hardy, cool-season annual that dislikes heat and strong sun, which shapes everything about how you grow it in temperate Australia. It prefers a moist, part-shaded spot and is happiest through the cooler shoulders of the year; the January–April and August–December windows deliberately sidestep the peak of summer.

The defining failure mode is bolting. In warm, dry, sunny conditions chervil runs to seed within weeks, turning bitter and coarse almost overnight. The fixes are to give it afternoon shade, keep the soil consistently moist with mulch, and sow little and often rather than one big bed, so you always have young, tender plants coming on. If a patch bolts, let it, as self-sown seedlings often appear in cooler weather.

Because it resents transplanting, always sow chervil direct into its final position and thin gently rather than moving seedlings. It grows fast, so keep the soil fertile with compost and do not let it dry out, which also triggers early flowering. Start picking outer leaves as soon as plants are established and harvest regularly to delay bolting. In a mild temperate winter it will often stand for months, giving its best flavour in the cool, so autumn sowings are especially rewarding.

Chervil at a glance

Common questions

Why does my chervil bolt so quickly?

Heat, dry soil and strong sun all push chervil to flower within weeks. Grow it in part shade, keep it consistently moist, and sow small batches often so you always have tender young plants rather than trying to hold one bolting patch.

Can I grow chervil in summer in Sydney?

Only with difficulty. Chervil is a cool-season herb that bolts in summer heat, so in Sydney it does far better in the cooler months. If you must grow it in summer, give it deep shade and constant moisture.

Should I sow chervil in pots or direct?

Sow it direct where it is to grow. Chervil has a taproot and resents transplanting, so it does best sown straight into the ground or a large container and thinned to 30 cm apart.

How often can I pick chervil?

Start picking outer leaves once plants are established and harvest regularly, as frequent cutting delays flowering. Because it matures in just 50–70 days, successive sowings give you a steady supply of fresh leaves.

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