Shallot · Shuangcheng, Heilongjiang, China
When to plant shallots in Shuangcheng
Main outdoor window
15 Mar - 5 Apr
The window this page is built around.
Timed from last spring frost
26 April
In Shuangcheng, on your chosen risk.
Ready to pick
13 Jun - 13 Jul
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 Shuangcheng
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
15 Mar - 5 Apr
Six weeks before your last frost.
Harvest
13 Jun - 13 Jul
Shallots through the year
Against the frost risk in Shuangcheng
Why these dates
Plant sets six weeks before the last frost, or in autumn in mild-winter regions for an earlier and larger crop. Push them in rather than burying them - the tip should be just visible.
Sets and young growth take -12C easily. Autumn-planted shallots overwinter through most temperate climates without protection.
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. Shallots are timed for direct sowing 6 weeks before it, and this page simply resolves those offsets against the frost date computed for Shuangcheng.
The median frost-free season here is 162 days, against 90 to 120 days to maturity for this crop counted from sowing. That margin is what decides whether a late sowing is worth attempting.
Also in Shuangcheng
Other vegetables to time
Growing shallots in Shuangcheng
When should I plant shallots in Shuangcheng?
Aim for 15 Mar - 5 Apr in an average year. If you would rather not gamble on the weather, wait until 24 Mar - 14 Apr - by then frost has finished in nine years out of ten.
When will shallots be ready to harvest in Shuangcheng?
Expect to start picking around 13 Jun - 13 Jul, based on 90 to 120 days to maturity from the planting date calculated for this location.
How much frost will shallots tolerate?
Sets and young growth take -12C easily. Autumn-planted shallots overwinter through most temperate climates without protection.