Turnip · Constantine, Constantine, Algeria
When to plant turnips in Constantine
Main outdoor window
26 Jan - 9 Feb
The window this page is built around.
Timed from last spring frost
23 February
In Constantine, on your chosen risk.
Ready to pick
7-22 Mar
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 Constantine
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
21 Sep - 12 Oct
Counting back 69 days from your first frost so the crop matures in time.
Sow direct
26 Jan - 9 Feb
Four weeks before your last frost.
Harvest
7-22 Mar
Turnips through the year
Against the frost risk in Constantine
Why these dates
Autumn crops sown eight to ten weeks before first frost are sweeter and less prone to woodiness than anything grown into summer heat.
Tolerates -8C. Roots hold in the ground well past the first frosts.
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. Turnips are timed for direct sowing 4 weeks before it, and this page simply resolves those offsets against the frost date computed for Constantine.
The median frost-free season here is 300 days, against 40 to 55 days to maturity for this crop counted from sowing. That margin is what decides whether a late sowing is worth attempting.
Also in Constantine
Other vegetables to time
Growing turnips in Constantine
When should I plant turnips in Constantine?
Aim for 26 Jan - 9 Feb in an average year. If you would rather not gamble on the weather, wait until 18 Feb - 4 Mar - by then frost has finished in nine years out of ten.
When will turnips be ready to harvest in Constantine?
Expect to start picking around 7-22 Mar, based on 40 to 55 days to maturity from the planting date calculated for this location.
How much frost will turnips tolerate?
Tolerates -8C. Roots hold in the ground well past the first frosts.