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When to plant peas in Sion: 17 April – 6 August

In Sion, peas: sow straight into the bed from 17 April to 6 August. For seeds, the places nearby include bioverger.ch (farm shop, 4 km) and Chez Cheseaux (farm shop, 15 km); addresses and opening hours are below.

Peas in Sion: soil, season and weather

Peas tolerates light frost, so it goes in three weeks before the last frost (8 May); the top 7 cm of soil has reached its minimum of 4 °C by then (around 29 March).

Last spring frost8 May
Top 7 cm of soil at 4 °C29 March, 40 days before the last frost
First autumn frost19 October, 185 days after the start
Days in the bed to the first harvest (card)74
First harvest, if planted in this window30 June – 19 October
Days left for picking111
Daylight13:38 on 17 April
Watering outdoors when fruiting (card)every 3 days; the driest month, September, has 12 rainy days

Peas in Sion: care after planting

Planted on 17 April: in the first weeks water every 6 days.

Pests and diseases of peas to watch for:

Weather in Sion during the peas season

About 797 mm of rain falls in the season; September is the driest month (91 mm) and May the wettest (160 mm).

MonthDay, °CNight, °CRain, mmRainy daysDaylight on the 15th
April11.1-0.1981313:32
May14.54.11602014:57
June20.29.51251815:46
July21.811.11151615:27
August2210.81031414:12
September17.77.1911212:36
October13.72.91051210:59

ERA5 2016–2025, Open-Meteo

Peas in nearby cities

Around Sion, Neuchâtel is 40 days earlier and Aosta 29 days later.

CityDistanceDateDifference
Aosta55 km16 May – 28 June29 days later
Lausanne65 km22 March – 7 September26 days earlier
Fribourg65 km5 April – 24 August12 days earlier
Bern80 km3 April – 21 August14 days earlier
Neuchâtel91 km8 March – 15 September40 days earlier
Geneva94 km20 March – 4 September28 days earlier

Where to buy peas seeds in Sion

Seeds go straight into the bed from 17 April to 6 August; buy them before that. Within 15 km of Sion OpenStreetMap lists 4 garden centres, 1 farm-supply shop, 1 plant nursery, 1 market and 4 farm shops (collected 27 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Each window starts on the Greenly calendar date and ends on the last day that still leaves the crop’s days to harvest (from its card) before the average first autumn frost, plus six weeks of picking for crops harvested over weeks (tomatoes, peppers, aubergines, cucumbers, courgettes, pumpkins, watermelons, beans) — our rule; earlier in the window is safer.

Questions

When to plant peas in Sion?

In Sion, peas: sow straight into the bed from 17 April to 6 August.

When is the last spring frost in Sion?

Last spring frost around 8 May, first autumn frost around 19 October.

Other crops in Sion, with their dates