Jerusalem artichoke · Istanbul, Istanbul, Turkey
When to plant jerusalem artichokes in Istanbul
Main outdoor window
19 Dec - 6 Feb
The window this page is built around.
Timed from last spring frost
20 February
In Istanbul, on your chosen risk.
Ready to pick
1 Oct - 31 Dec
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 Istanbul
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.
Plant tubers
19 Dec - 6 Feb
Any time the plant is dormant and the ground is neither frozen nor waterlogged: after leaf fall in autumn, or at the end of winter before growth restarts.
Harvest
1 Oct - 31 Dec
Jerusalem artichokes through the year
Against the frost risk in Istanbul
Why these dates
Plant tubers in early spring, 10 cm deep. Lift as needed through autumn and winter - the tubers keep better in the ground than out of it, and frost improves the flavour.
Fully hardy in the ground to -25C. The top growth is killed by the first frost, which is the signal to start digging.
Jerusalem artichokes are planted once and then left in place, so there is no sowing offset to resolve. What matters in Istanbul is the shape of the year: this crop is dormant through the winter and is planted while it sleeps, any time between leaf fall in autumn and the restart of growth in spring, so long as the ground is neither frozen nor waterlogged. That is why the window below spans the cold months rather than sitting in the middle of the growing season.
Istanbul sits in zone 9b, which is milder than this crop wants, and a winter that never really arrives is its own problem. The dates below still describe the right time of year; the open question is survival rather than timing.
Do not expect a crop in the first year. A plant set out now should give its first worthwhile pick around year 1, and will then produce every year after that, which is what makes the planting decision worth getting right the first time.
Also in Istanbul
Other vegetables to time
Growing jerusalem artichokes in Istanbul
When should I plant jerusalem artichokes in Istanbul?
Aim for 19 Dec - 6 Feb in an average year. If you would rather not gamble on the weather, wait until 5 Dec - 4 Mar - by then frost has finished in nine years out of ten.
When will jerusalem artichokes be ready to harvest in Istanbul?
Expect to start picking around 1 Oct - 31 Dec, based on 120 to 150 days to maturity from the planting date calculated for this location.
How much frost will jerusalem artichokes tolerate?
Fully hardy in the ground to -25C. The top growth is killed by the first frost, which is the signal to start digging.