Globe artichoke · Istanbul, Istanbul, Turkey
When to plant globe artichokes in Istanbul
Main outdoor window
6 Mar - 3 Apr
A climate estimate. Check your soil, forecast and cultivar.
Timed from last spring frost
20 February
In Istanbul, on your chosen risk.
Ready to pick
1 Jul - 30 Sep
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
Download these planting dates (.ics)
Import into Apple Calendar, Google Calendar or Outlook. Dates use the selected risk level and are planning estimates, not frost alerts.
Each window is a planning range. Check the forecast, soil and cultivar before planting; a later date is not automatically safer in hot or wet conditions.
Start indoors
25 Dec - 23 Jan
Eight weeks before your last frost, under cover or on a windowsill.
Plant out
6 Mar - 3 Apr
Two weeks after your last frost.
Harvest
1 Jul - 30 Sep
Globe artichokes through the year
Against the frost risk in Istanbul
Seasonal context
Rainfall and the growing season in Istanbul
December has the highest average precipitation (83 mm); July has the lowest (20 mm). Compare this pattern with the planting windows and your water supply.
During wetter months, check that beds and containers drain after heavy rain. During drier months, plan how you will keep seeds and new transplants watered. Monthly averages can hide long dry spells and intense storms; they do not show soil moisture, humidity or this week's weather.
Source: NASA POWER, corrected MERRA-2 precipitation, 2001–2020. Values are approximate monthly totals, including the water equivalent of snow, from the nearest 0.5° × 0.625° grid cell. This reference period differs from the temperature record. Rainfall provides context and does not change the calculated planting dates. Method and limitations.
Monthly growing conditions in Istanbul
Compare the planting window with the local temperature pattern. These are historical monthly averages, not this year's forecast or measured soil temperatures. Average frost days do not tell you whether a particular night will freeze.
| Month | Average low | Average high | Frost days |
|---|---|---|---|
| January | 3.7°C (38.7°F)38.7°F (3.7°C) | 8.4°C (47.1°F)47.1°F (8.4°C) | 4.0 |
| February | 4°C (39.1°F)39.1°F (4°C) | 9.3°C (48.8°F)48.8°F (9.3°C) | 2.6 |
| March | 5.3°C (41.5°F)41.5°F (5.3°C) | 11.4°C (52.4°F)52.4°F (11.4°C) | 0.8 |
| April | 8.8°C (47.8°F)47.8°F (8.8°C) | 15.8°C (60.5°F)60.5°F (15.8°C) | 0.0 |
| May | 13.6°C (56.5°F)56.5°F (13.6°C) | 21°C (69.7°F)69.7°F (21°C) | 0.0 |
| June | 18.5°C (65.3°F)65.3°F (18.5°C) | 25.8°C (78.5°F)78.5°F (25.8°C) | 0.0 |
| July | 21.4°C (70.5°F)70.5°F (21.4°C) | 28.9°C (83.9°F)83.9°F (28.9°C) | 0.0 |
| August | 22.1°C (71.7°F)71.7°F (22.1°C) | 29.1°C (84.3°F)84.3°F (29.1°C) | 0.0 |
| September | 18.8°C (65.8°F)65.8°F (18.8°C) | 25.2°C (77.3°F)77.3°F (25.2°C) | 0.0 |
| October | 14.3°C (57.7°F)57.7°F (14.3°C) | 19.9°C (67.8°F)67.8°F (19.9°C) | 0.0 |
| November | 9.9°C (49.9°F)49.9°F (9.9°C) | 15.2°C (59.3°F)59.3°F (15.2°C) | 0.1 |
| December | 6.1°C (42.9°F)42.9°F (6.1°C) | 10.6°C (51.1°F)51.1°F (10.6°C) | 0.8 |
For globe artichokes, also check drainage, sunlight and cultivar requirements. See the rainfall context above; humidity, irrigation and local pest pressure are not calculated.
Local growing check
Before choosing globe artichokes for Istanbul
- December is the wettest month in the rainfall grid, averaging about 83 mm. Check how your own bed drains and plan watering around actual soil moisture; monthly rain totals are not an irrigation schedule.
The temperature and rainfall tables on this page show the underlying climate estimates. How these suitability checks work · Record what happens in your garden.
Before you plant globe artichokes
Use the calendar to plan ahead, then check the conditions in your own garden.
- Check the local overnight forecast before planting out. Delay planting or keep protection ready if frost is forecast, even after the historical last-frost date.
- Harden off plants raised indoors: gradually expose them to outdoor light, wind and temperature before their final move into the bed.
- Check mature size, drainage and cultivar suitability before choosing a permanent position. A suitable planting window does not guarantee long-term survival or fruiting.
Plan a permanent position and harvest unopened buds
Leave room for the mature leaves and provide a fertile, drained position. Check the cultivar and local winter conditions before assuming a plant will persist for many years.
Cut buds while the scales remain sufficiently tight for your intended use. Once the purple flower opens, it has become a different ornamental and pollinator resource rather than the same kitchen harvest.
What to record this season
When were buds tightly closed and large enough for your intended use? Add the cultivar, sowing date and conditions to your growing record so you can compare next season.
Further reading: RHS globe artichokes growing guide . General crop guidance; local dates on this site are calculated separately. Source checked 19 September 2026 by Safe to Plant; this is not an expert review.
The RHS guide is written for UK growing conditions. Use its cultivation advice with local cultivar and seasonal guidance; its calendar months are not worldwide recommendations.
How the dates are calculated and their limits · Keep a growing record · Report a local discrepancy
Why these dates
Leave room for the mature leaves and provide a fertile, drained position. Check the cultivar and local winter conditions before assuming a plant will persist for many years.
Protect tender growth from frost and wait for suitable growing warmth. The catalog cold-damage figure is a reference, not a guarantee: duration, wind, plant age and acclimatisation affect damage.
This calendar uses frost-relative offsets as a starting point. Globe artichokes are timed from 8 weeks before that frost for an indoor start, with planting out 2 weeks after it, and this page simply resolves those offsets against the frost date computed for Istanbul.
Istanbul is zone 9b, within the crop's general range. This is an initial cold-hardiness check; cultivar, exposure, drainage and unusual winters can still change the outcome.
The general establishment guide is around year 2, under suitable conditions. This is not a prediction for this location; cultivar, winter conditions and care determine whether it crops reliably.
Also in Istanbul
Other vegetables to time
Growing globe artichokes in Istanbul
Can I grow globe artichokes in Istanbul?
The calendar estimates a planting window, not a guarantee of success. December is the wettest month in the rainfall grid, averaging about 83 mm. Check how your own bed drains and plan watering around actual soil moisture; monthly rain totals are not an irrigation schedule.
When should I plant globe artichokes in Istanbul?
Aim for 6 Mar - 3 Apr in an average year. If you would rather not gamble on the weather, wait until 1-29 Apr - by then frost has finished in nine years out of ten.
When might globe artichokes be ready to harvest in Istanbul?
The estimated period is 1 Jul - 30 Sep, based on 150 to 180 days from the modeled planting date. Cultivar, planting material and growing conditions can change this interval; check the plant as well as the calendar.
How much frost will globe artichokes tolerate?
Protect tender growth from frost and wait for suitable growing warmth. The catalog cold-damage figure is a reference, not a guarantee: duration, wind, plant age and acclimatisation affect damage.