In the garden now (2 November 2026)
Dublin planting calendar
Bars show when each crop can go in and when a planting from that window is ready. The blue band is the frost season, from the average first autumn frost to the average last spring frost. Hover or tap a crop for details.
Sow indoorsSow or plant outdoorsHarvestFrost seasonToday
Swipe sideways to see the whole year →
Dates by crop
| Crop | Sow indoors | Sow / plant outdoors | Harvest |
|---|---|---|---|
| Tomato | No outdoor window passes all the checks here; grow it under cover or try a specialist variety. | ||
| Pepper | Summers are too cool for a reliable outdoor crop. Grow it in a greenhouse or polytunnel. | ||
| Eggplant (aubergine) | Summers are too cool for a reliable outdoor crop. Grow it in a greenhouse or polytunnel. | ||
| Cucumber | No outdoor window passes all the checks here; grow it under cover or try a specialist variety. | ||
| Zucchini (courgette) | May 27 – Jun 12 | Jun 24 – Jul 3 sow | Sep 9 – Oct 5 |
| Pumpkin and winter squash | No outdoor window passes all the checks here; grow it under cover or try a specialist variety. | ||
| Watermelon | Summers are too cool for a reliable outdoor crop. Grow it in a greenhouse or polytunnel. | ||
| Sweet corn | No outdoor window passes all the checks here; grow it under cover or try a specialist variety. | ||
| Green beans | No outdoor window passes all the checks here; grow it under cover or try a specialist variety. | ||
| Peas | – | Mar 2 – Aug 19 sow | Jun 23 – Nov 17 |
| Lettuce | Feb 9 – Mar 9 | Mar 16 – Sep 3 sow | Jun 11 – Nov 20 |
| Spinach | – | Mar 2 – Sep 13 sow | Jun 1 – Dec 10 |
| Kale | Jan 26 – Mar 2 | Mar 9 – Aug 31 sow | Jun 19 – Dec 25 |
| Cabbage | Jan 26 – Mar 2 | Mar 16 – Aug 13 plant out | Jul 6 – Dec 1 |
| Broccoli | Feb 2 – Mar 9 | Mar 23 – Aug 21 plant out | Jun 28 – Nov 24 |
| Carrots | – | Mar 23 – Aug 21 sow | Jul 3 – Dec 25 |
| Beets (beetroot) | – | Mar 23 – Aug 27 sow | Jun 23 – Dec 1 |
| Radishes | – | Mar 13 – Sep 29 sow | May 13 – Nov 24 |
| Onions | Jan 5 – Feb 9 | Mar 16 – Jul 16 plant out | Jul 28 – Nov 10 |
| Garlic | – | Sep 15 – Oct 19 sow | Jun 21 – Jul 11 |
| Potatoes | – | Apr 2 – Jul 21 sow | Jul 29 – Nov 10 |
| Swiss chard | – | Apr 2 – Sep 1 sow | Jun 22 – Dec 1 |
| Basil | Summers are too cool for a reliable outdoor crop. Grow it in a greenhouse or polytunnel. | ||
| Cilantro (coriander) | – | Mar 23 – Sep 15 sow | Jun 2 – Nov 24 |
| Parsley | Feb 5 – Mar 12 | Apr 2 – Aug 14 sow | Jul 11 – Dec 10 |
Dates are for a typical year and the middle of the window is the safest. Sow a little at a time across a window rather than all at once. Cold snaps, heat waves, frost pockets and city warmth all shift the real dates; watch the forecast.
Frost dates in Dublin
- Average last spring frost
- April 13
- Late frost (1 year in 10)
- April 29 approx.
- Average first autumn frost
- November 10
- Early frost (1 year in 10)
- October 27 approx.
- Frost-free growing season
- 210 days
“Average” is the date with an even chance of a later (spring) or earlier (autumn) frost: a night at or below 0 °C (32 °F) at screen height. Tender crops go out a week or two after the spring date, which brings the risk down to about one year in ten.
Source: Estimated from TerraClimate 1991–2020 climate normals (typical error about a week; how).
Climate at a glance
- Hardiness zone
- 9a estimate
- Average coldest winter night
- -5°C24°F
- Warmest month
- July, highs 21°C69°F
- Coldest month
- January, lows 2°C36°F
- Crops with an outdoor window
- 16 of 25
The zone follows the USDA scheme: bands of the average lowest temperature of the year, 10 °F wide, split into a and b halves. Estimated from monthly climate normals; about one city in ten we checked comes out a full half-zone off. It tells you which perennials survive winter, not when to sow.
Temperature and rain by month
Average highAverage lowRainFreezing point
| Month | High | Low | Mean | Rain |
|---|---|---|---|---|
| January | 8°C47°F | 2°C36°F | 6°C42°F | 57 mm2.3 in |
| February | 9°C49°F | 2°C36°F | 6°C43°F | 51 mm2.0 in |
| March | 11°C52°F | 4°C38°F | 7°C45°F | 45 mm1.8 in |
| April | 13°C56°F | 5°C41°F | 9°C48°F | 52 mm2.1 in |
| May | 16°C61°F | 7°C45°F | 12°C53°F | 51 mm2.0 in |
| June | 19°C66°F | 10°C50°F | 14°C58°F | 60 mm2.4 in |
| July | 21°C69°F | 12°C53°F | 16°C61°F | 62 mm2.4 in |
| August | 20°C68°F | 12°C53°F | 16°C61°F | 74 mm2.9 in |
| September | 18°C65°F | 10°C49°F | 14°C57°F | 64 mm2.5 in |
| October | 14°C58°F | 7°C45°F | 11°C52°F | 77 mm3.0 in |
| November | 11°C52°F | 4°C40°F | 8°C46°F | 82 mm3.2 in |
| December | 9°C48°F | 3°C37°F | 6°C43°F | 70 mm2.8 in |
Monthly averages 1991–2020 from TerraClimate (about 4 km grid).