Beetroot · Saitama, Saitama, Japan
When to plant beetroot in Saitama
Main outdoor window
15-29 Mar
The window this page is built around.
Timed from last spring frost
5 April
In Saitama, on your chosen risk.
Ready to pick
4-24 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 Saitama
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
13 Aug - 3 Sep
Counting back 84 days from your first frost so the crop matures in time.
Sow direct
15-29 Mar
Three weeks before your last frost.
Harvest
4-24 May
Beetroot through the year
Against the frost risk in Saitama
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 Saitama.
The median frost-free season here is 235 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 Saitama
Other vegetables to time
Growing beetroot in Saitama
When should I plant beetroot in Saitama?
Aim for 15-29 Mar in an average year. If you would rather not gamble on the weather, wait until 24 Mar - 7 Apr - by then frost has finished in nine years out of ten.
When will beetroot be ready to harvest in Saitama?
Expect to start picking around 4-24 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.