Most "best vegetables to grow" lists are written for UK or American conditions. Ireland is different. We don't get the sunny, warm summers that make peppers and aubergines reliable. We get mild, wet, unpredictable seasons that suit brassicas, root vegetables, and cool-weather crops extremely well — and punish heat-hungry plants without protection.
This list is built for Irish growing conditions: what genuinely performs well here, with honest notes on what to expect.
The Reliable 15
1. Potatoes
Sow: February–March (under cover), March–April (outdoors)
Harvest: June–October depending on variety
Why it works: Ireland's cool, moist climate is basically ideal for potato production. Earlies (Orla, Home Guard, Duke of York) are ready in June–July; maincrop (Rooster, Kerr's Pink, Golden Wonder) harvest in September–October and store through winter. A 3 × 1 m bed can produce 15–20 kg of potatoes. Watch for blight from July onwards in wet years — Irish conditions are textbook blight weather.
2. Kale
Sow: April–June
Harvest: September onwards, through winter
Why it works: Kale was bred for north Atlantic conditions. It doesn't care about frost (frost actually improves the flavour), tolerates waterlogging better than almost any vegetable, and keeps producing right through winter. Curly kale (Dwarf Green Curled), cavolo nero, and Red Russian are all reliable in Ireland. A 1.2 × 1.2 m bed of kale will produce more than most families can eat.
3. Leeks
Sow: February–March under cover, transplant May–June
Harvest: September–April (yes, really)
Why it works: Leeks occupy your growing space for a long time but they're harvesting in the gap when almost nothing else is — November through March. Musselburgh and Autumn Giant are the standard Irish varieties. Plant pencil-thick seedlings into holes 20 cm deep, water them in, and largely ignore them until autumn.
4. Courgettes
Sow indoors: Late April–May
Plant out: Late May–June (after last frost)
Harvest: July–October
Why it works: Courgettes are one of the most productive summer crops in Ireland. One plant genuinely produces more courgettes than most people can eat. They don't need the prolonged heat of aubergines or peppers — once established in June, they motor through the summer. Pick them small (15–20 cm) for better flavour. Yellow varieties (Goldy, Atena) are easy to spot at harvest.
5. Salad leaves
Sow: March–September (successionally)
Harvest: 3–4 weeks after sowing, cut-and-come-again
Why it works: Nothing demonstrates the value of growing your own faster than salad leaves. A 30 cm × 60 cm patch sown with mixed leaves (Oakleaf, Lollo Rossa, rocket, spinach) gives you weekly salad harvests within a month. Sow every 3 weeks from March to avoid a glut. Will bolt in very warm weather (rare in Ireland) — if it does, cut and re-sow.
6. Spinach and chard
Sow: March–August
Harvest: 6–8 weeks from sowing, cut-and-come-again
Why it works: Perpetual spinach (leaf beet) is essentially chard and is virtually indestructible in Irish conditions. It shrugs off frost, regrows after cutting, and can be harvested from April to November. Chard varieties (Rainbow Chard, Bright Lights) are nutritionally excellent and look spectacular. Avoid summer spinach in July/August heat — it bolts immediately. Sow perpetual spinach instead.
7. Beetroot
Sow direct: May–July
Harvest: 8–10 weeks from sowing
Why it works: Beetroot is easy, reliable, and stores well. Direct sow into moist soil, thin to 10 cm apart, harvest when golf-ball sized (best flavour) or leave to tennis-ball size. Moneta (monogerm — no thinning needed), Boltardy (bolt-resistant), and Chioggia (striped, mild) are all good Irish varieties. Roast in the oven in olive oil and eat warm or store in the fridge all week.
8. Broad beans
Sow: October–November (overwintering) or February–March
Harvest: May–July
Why it works: Broad beans are Ireland's best late-spring crop. Autumn-sown beans (Aquadulce Claudia, The Sutton) overwinter outdoors and produce from May — earlier than anything else in your plot. They fix nitrogen, are rarely bothered by pests in Ireland, and produce generously. Watch for blackfly from June — pinch out the growing tips when the plants are in full flower.
9. Garlic
Plant: October–November
Harvest: June–July
Why it works: Garlic needs a cold period to develop properly — Irish winters provide this reliably. Plant cloves in October, do essentially nothing, and harvest cured bulbs in July. Wight-grown varieties (Solent Wight, Early Purple Wight) are reliably available from Irish garden centres. Use the space for a summer crop after the garlic comes out.
10. Onions and shallots
Plant sets: March–April
Harvest: July–August
Why it works: Sets (small bulbs, not seed) are easy and reliable. Plant 10 cm apart, barely cover, and harvest when the tops fall over. Stuttgarter, Red Baron, and Sturon are all reliable Irish performers. Shallots (Longor, Golden Gourmet) are slightly more expensive but produce more from each bulb and have better storage life. Both can be stored dry until the following spring.
11. Peas
Sow: March–June (earlier indoors, later direct)
Harvest: June–August
Why it works: Fresh peas from the garden bear no resemblance to the frozen version. Sugar snap and mangetout types are more productive than shelling peas per square metre. Sow every 3 weeks for succession. Needs support — even 60 cm sticks for dwarf varieties. Can fail if late spring is very cold and wet (2026 was; 2025 was fine) — start indoors if in doubt.
12. French beans (dwarf)
Sow indoors: Late April–May
Direct sow: Late May (after last frost)
Harvest: July–October
Why it works: Dwarf French beans (Safari, Cobra, Delinel) are extremely productive and need no support. A 1.2 × 0.6 m patch will feed a family through the summer. Pick when finger-length for best quality. Don't sow outside until the soil is reliably warm (12°C+) — mid-May in most of Ireland.
13. Carrots
Sow direct: April–July
Harvest: 12–16 weeks from sowing
Why it works (with a caveat): Carrots grow beautifully in Ireland — in the right soil. They need deep, loose, stone-free soil. In a properly filled raised bed (see our raised beds guide), they're excellent. In heavy clay garden soil, they fork and fail. Nantes types are the most reliable Irish variety. Cover with fleece from mid-May to protect against carrot root fly.
14. Curly kale and purple sprouting broccoli
Sow: May–June
Harvest: PSB: February–April the following year; kale: October onwards
Why it works: PSB is the best winter-spring vegetable for Ireland. It sits in the ground all winter and produces in February–April when nothing else is ready — exactly the hungry gap period. You need the space for a full year, but the reward is fresh broccoli in February. Kale (above, #2) is its essential companion.
15. Courgettes (polytunnel) → Tomatoes
Sow indoors: March–April
Plant in polytunnel: May
Harvest: July–October
Why it works (with protection): Tomatoes are unreliable outdoors in Ireland — too much rain, not enough heat, and blight risk. In a polytunnel or even a cold greenhouse, they're excellent. Moneymaker, Alicante (cordon types) and Tumbler (container/hanging basket) all perform well. This is worth including on any list because the gap between home-grown and shop-bought tomatoes is wider than for any other crop.
What Not to Grow in Ireland (Without Protection)
- Sweet peppers / capsicums — need 20°C+ to set fruit; outdoor crops almost always fail in Ireland
- Aubergines — same issue; reliable only in a heated polytunnel
- Sweet corn — needs a hot summer to ripen reliably; patchy results even in good years
- Basil — hates cold; grow on a warm indoor windowsill, not outside
- Outdoor tomatoes — see above; blight and lack of heat make this high-risk
- Melons, watermelons, cucumbers (outdoors) — occasional success in warm years in the south-east; generally unreliable
The Irish Grower's Calendar at a Glance
| Month | Sow indoors | Sow/plant outdoors |
|---|---|---|
| Feb–Mar | Leeks, tomatoes, broad beans | Broad beans (south/sheltered), garlic (if not done Oct) |
| April | Courgettes, French beans | Salad, spinach, peas, onion sets, early potatoes |
| May | Kale, PSB | Beetroot, carrots, French beans (late May), maincrop potatoes |
| June–July | Succession salad, kale transplants, overwintering onions | |
| Oct–Nov | Garlic, overwintering broad beans |
For a full month-by-month guide see our Irish Grow Calendar →
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