Chervil · Thị Trấn Đông Triều, Quảng Ninh, Vietnam
When to plant chervil in Thị Trấn Đông Triều
Main outdoor window
30 Aug - 20 Sep
The window this page is built around.
Timed from last spring frost
no spring frost
In Thị Trấn Đông Triều, on your chosen risk.
First autumn frost
23 December
The far end of the outdoor season.
The average last frost. Half of all years are later than this.
Step by step in Thị Trấn Đông Triều
Each window is a range, not a single day. Earlier in the range buys you a longer season; later in it buys you a safer one.
Sow for overwintering
30 Aug - 20 Sep
Counting back 94 days from your first frost so the crop matures in time.
Chervil through the year
Against the frost risk in Thị Trấn Đông Triều
Why these dates
Sow direct in succession from four weeks before the last frost, then stop for high summer and resume in late summer. An autumn sowing under cover picks through winter.
Tolerates about -8C and grows through mild winters in a cold frame, which is when it is at its best.
Seed packets and extension guides express timing as weeks either side of the last spring frost, because that is the only reference point that travels. Chervil are timed for direct sowing 4 weeks before it, and this page simply resolves those offsets against the frost date computed for Thị Trấn Đông Triều.
Growing chervil in Thị Trấn Đông Triều
How much frost will chervil tolerate?
Tolerates about -8C and grows through mild winters in a cold frame, which is when it is at its best.