Skirret · Shijie, Guangdong, China
When to plant skirret in Shijie
Main outdoor window
20 Dec - 4 Jan
The window this page is built around.
Timed from last spring frost
18 January
In Shijie, on your chosen risk.
Ready to pick
1 Oct - 31 Mar
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 Shijie
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.
Plant offsets
20 Dec - 4 Jan
Any time the plant is dormant and the ground is neither frozen nor waterlogged: after leaf fall in autumn, or at the end of winter before growth restarts.
Harvest
1 Oct - 31 Mar
Skirret through the year
Against the frost risk in Shijie
Why these dates
Plant offsets in early spring while dormant. Lift from the second autumn onwards, keeping a few crowns each time to replant, so the patch renews itself indefinitely.
Hardy to -15C and below. Roots are dug through winter and are sweeter after they have been frozen in the ground.
Skirret are planted once and then left in place, so there is no sowing offset to resolve. What matters in Shijie is the shape of the year: this crop is dormant through the winter and is planted while it sleeps, any time between leaf fall in autumn and the restart of growth in spring, so long as the ground is neither frozen nor waterlogged. That is why the window below spans the cold months rather than sitting in the middle of the growing season.
Shijie sits in zone 10a, which is milder than this crop wants, and a winter that never really arrives is its own problem. The dates below still describe the right time of year; the open question is survival rather than timing.
Do not expect a crop in the first year. A plant set out now should give its first worthwhile pick around year 1, and will then produce every year after that, which is what makes the planting decision worth getting right the first time.
Also in Shijie
Other vegetables to time
Growing skirret in Shijie
When should I plant skirret in Shijie?
Aim for 20 Dec - 4 Jan in an average year. If you would rather not gamble on the weather, wait until 18 Dec - 10 Jan - by then frost has finished in nine years out of ten.
When will skirret be ready to harvest in Shijie?
Expect to start picking around 1 Oct - 31 Mar, based on 150 to 200 days to maturity from the planting date calculated for this location.
How much frost will skirret tolerate?
Hardy to -15C and below. Roots are dug through winter and are sweeter after they have been frozen in the ground.