Cress · Chengdu, Sichuan, China
When to plant cress in Chengdu
Main outdoor window
17 Jan - 14 Mar
The window this page is built around.
Timed from last spring frost
14 February
In Chengdu, on your chosen risk.
Ready to pick
1 Apr - 31 Oct
If you plant at the start of the window.
The average last frost. Half of all years are later than this.
Step by step in Chengdu
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 direct
17 Jan - 14 Mar
Four weeks before your last frost.
Harvest
1 Apr - 31 Oct
Cress through the year
Against the frost risk in Chengdu
Why these dates
Sow thickly every week from four weeks before the last frost. It needs no space, no depth and no waiting, so it fills the edges of beds all season.
Damaged below about -3C, but the crop is over so quickly that frost rarely gets the chance to reach it.
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. Cress are timed for direct sowing 4 weeks before it, and this page simply resolves those offsets against the frost date computed for Chengdu.
The median frost-free season here is 300 days, against 14 to 21 days to maturity for this crop counted from sowing. That margin is what decides whether a late sowing is worth attempting.
Also in Chengdu
Other vegetables to time
Growing cress in Chengdu
When should I plant cress in Chengdu?
Aim for 17 Jan - 14 Mar in an average year. If you would rather not gamble on the weather, wait until 6 Feb - 3 Apr - by then frost has finished in nine years out of ten.
When will cress be ready to harvest in Chengdu?
Expect to start picking around 1 Apr - 31 Oct, based on 14 to 21 days to maturity from the planting date calculated for this location.
How much frost will cress tolerate?
Damaged below about -3C, but the crop is over so quickly that frost rarely gets the chance to reach it.