When to plant daffodils in Aosta: 11 August – 22 October

In Aosta, daffodil: plant from 11 August to about 22 October. For planting stock, the places nearby include Agricenter (garden centre, 3 km); addresses and opening hours are below.

Bulbs are best planted early in the window: late-planted bulbs may flower later or less well. Late planting works only while the soil can be dug. Mulch after planting.

The date is about two weeks before the average daily temperature here falls below 0 °C (ten years of weather): an estimate, not the day the ground freezes, and a cold spell can freeze it earlier. Sources: Iowa State University Extension, Wisconsin Horticulture Extension, UNH Extension, RHS, how the ground freezes (NRC Canada, CBD-26).

Daffodil in Aosta: soil, season and weather

Nights then average below 0 °C in November–May; the coldest, January, averages -11.9 °C.

Planting	11 August – 22 October
First autumn frost	10 September
Coldest nights	January, -11.9 °C
Soil back at 7 °C in spring	28 May
Daylight	14:21 on 11 August
Daylight at the winter solstice	8:40

The same dates in Aosta hold for Garlic, Tulip, Crocus and Hyacinth.

Daffodil in Aosta: depth, winter cold, pests and pets

Plant daffodils three times the bulb’s height deep (RHS): about 13–15 cm for large bulbs, 15–20 cm apart (University of Georgia Extension). The RHS advises planting them early in autumn, ideally in September in the UK, so do not leave them late: aim for the start of the window, 11 August.

In Aosta the average daily temperature stays at 10 °C or lower for about 40 weeks a year (our estimate from ten years of monthly weather). For this bulb Wisconsin Horticulture Extension gives a cold period of 15–17 weeks at about 2–10 °C. The winter here gives that in the ground, so the bulbs need no pre-chilling.

Daffodils are long-lived: clumps slowly expand over the years (RHS). Leave the leaves for at least eight weeks after flowering — they feed next year’s flowers (University of Georgia Extension).

Squirrels avoid daffodils, so they can be planted among tulips to reduce losses (RHS). Daffodils are toxic to dogs, cats and horses; the bulbs are the most poisonous part, and a large amount can cause convulsions and heart rhythm problems (ASPCA).

Sources: RHS, University of Georgia Extension, Wisconsin Horticulture Extension, ASPCA.

Daffodil in nearby cities

All the nearest cities on our list plant daffodil later than Aosta; the closest date is in Sion, 39 days later.

City	Distance	Date	Difference
Sion	55 km	19 September – 19 November	39 days later
Turin	80 km	21 October – end of December	71 days later
Annecy	94 km	15 October – end of December	65 days later
Geneva	105 km	18 October – end of December	68 days later
Novara	106 km	23 October – end of December	73 days later
Fribourg	119 km	7 October – 30 December	57 days later

Where to buy daffodil for planting in Aosta

Planting stock goes into the ground from 11 August to about 22 October; buy it before that. Within 15 km of Aosta OpenStreetMap lists 4 garden centres, 2 markets and 2 farm shops (collected 27 October 2026).

Agricenter — garden centre
Via / Rue de la Croix-Noire 79, 11020 Saint-Christophe · Mon–Sat 08:30–12:30; Mon–Fri 15:00–19:00 · 3 km
Mercato coperto / Halles d'Aoste — market
Piazza dei Cavalieri di Vittorio Veneto - Place des Chevaliers de Vittorio Veneto, 11100 Aosta / Aoste · Mon, Tue, Thu, Fri 07:30–14:00; Wed, Sat 07:00–15:00 · 1 km
Isa Vivai — garden centre
8 km · isavivai.com
Vivai Valdostani — garden centre
5 km
I Giardini del Sole — garden centre
8 km
Champ de la Croix — market
3 km
La Borettaz — farm shop
2 km · laborettaz.it
Punto vendita Azienda Agricola le Motte — farm shop
15 km

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