Radish · Guyuan, Ningxia, China
When to plant radishes in Guyuan
Main outdoor window
30 Mar - 6 Apr
The window this page is built around.
Timed from last spring frost
27 April
In Guyuan, on your chosen risk.
Ready to pick
21-29 Apr
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 Guyuan
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 autumn
8-29 Aug
Counting back 44 days from your first frost so the crop matures in time.
Sow direct
30 Mar - 6 Apr
Four weeks before your last frost.
Harvest
21-29 Apr
Radishes through the year
Against the frost risk in Guyuan
Why these dates
Sow every week in spring and autumn. Summer sowings turn woody and hot - stop when daytime temperatures pass 25C and resume in late summer.
Handles -6C easily and is often the first and last thing harvested in the year.
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. Radishes are timed for direct sowing 4 weeks before it, and this page simply resolves those offsets against the frost date computed for Guyuan.
The median frost-free season here is 168 days, against 22 to 30 days to maturity for this crop counted from sowing. That margin is what decides whether a late sowing is worth attempting.
Also in Guyuan
Other vegetables to time
Growing radishes in Guyuan
When should I plant radishes in Guyuan?
Aim for 30 Mar - 6 Apr in an average year. If you would rather not gamble on the weather, wait until 15-22 Apr - by then frost has finished in nine years out of ten.
When will radishes be ready to harvest in Guyuan?
Expect to start picking around 21-29 Apr, based on 22 to 30 days to maturity from the planting date calculated for this location.
How much frost will radishes tolerate?
Handles -6C easily and is often the first and last thing harvested in the year.