Mizuna · Guangzhou, Guangdong, China
When to plant mizuna in Guangzhou
Main outdoor window
12 Dec - 10 Jan
The window this page is built around.
Timed from last spring frost
10 January
In Guangzhou, on your chosen risk.
Ready to pick
1 May - 30 Nov
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 Guangzhou
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
4-25 Oct
Counting back 59 days from your first frost so the crop matures in time.
Sow direct
12 Dec - 10 Jan
Four weeks before your last frost.
Harvest
1 May - 30 Nov
Mizuna through the year
Against the frost risk in Guangzhou
Why these dates
Sow from four weeks before the last frost and every two weeks after. A late-summer sowing under cover picks through most of the winter.
Hardy to about -8C unprotected and considerably lower under a cloche, which makes it one of the most useful winter salad leaves.
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. Mizuna are timed for direct sowing 4 weeks before it, and this page simply resolves those offsets against the frost date computed for Guangzhou.
The median frost-free season here is 348 days, against 35 to 45 days to maturity for this crop counted from sowing. That margin is what decides whether a late sowing is worth attempting.
Also in Guangzhou
Other vegetables to time
Growing mizuna in Guangzhou
When should I plant mizuna in Guangzhou?
Aim for 12 Dec - 10 Jan in an average year. If you would rather not gamble on the weather, wait until 3-31 Jan - by then frost has finished in nine years out of ten.
When will mizuna be ready to harvest in Guangzhou?
Expect to start picking around 1 May - 30 Nov, based on 35 to 45 days to maturity from the planting date calculated for this location.
How much frost will mizuna tolerate?
Hardy to about -8C unprotected and considerably lower under a cloche, which makes it one of the most useful winter salad leaves.