Beetroot · Tanggu, Tianjin, China
When to plant beetroot in Tanggu
Main outdoor window
10-24 Mar
The window this page is built around.
Timed from last spring frost
31 March
In Tanggu, on your chosen risk.
Ready to pick
29 Apr - 19 May
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 Tanggu
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
25 Jul - 15 Aug
Counting back 84 days from your first frost so the crop matures in time.
Sow direct
10-24 Mar
Three weeks before your last frost.
Harvest
29 Apr - 19 May
Beetroot through the year
Against the frost risk in Tanggu
Why these dates
Sow from three weeks before last frost, then every three weeks until ten weeks before first frost. Small roots taste better than large ones.
Seedlings take a light frost. Very early sowings into cold soil can trigger bolting later, so do not rush the first one.
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. Beetroot are timed for direct sowing 3 weeks before it, and this page simply resolves those offsets against the frost date computed for Tanggu.
The median frost-free season here is 221 days, against 50 to 70 days to maturity for this crop counted from sowing. That margin is what decides whether a late sowing is worth attempting.
Also in Tanggu
Other vegetables to time
Growing beetroot in Tanggu
When should I plant beetroot in Tanggu?
Aim for 10-24 Mar in an average year. If you would rather not gamble on the weather, wait until 21 Mar - 4 Apr - by then frost has finished in nine years out of ten.
When will beetroot be ready to harvest in Tanggu?
Expect to start picking around 29 Apr - 19 May, based on 50 to 70 days to maturity from the planting date calculated for this location.
How much frost will beetroot tolerate?
Seedlings take a light frost. Very early sowings into cold soil can trigger bolting later, so do not rush the first one.