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

In Aosta, tulip: 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).

Tulip in Aosta: soil, season and weather

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

Planting11 August – 22 October
First autumn frost10 September
Coldest nightsJanuary, -11.9 °C
Soil back at 7 °C in spring28 May
Daylight14:21 on 11 August
Daylight at the winter solstice8:40

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

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

Plant tulips at a depth of two to three times the bulb’s height, at least twice the bulb’s width apart, pointed end up (RHS). Where winters are very cold, tulips benefit from deeper planting to protect them from frost penetrating the soil (RHS); here the average daily temperature drops below 0 °C in winter.

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.

Border tulips often fail to flower in their second year if left in the ground, so many gardeners grow them for one spring and plant fresh bulbs each autumn; Darwin hybrid and Kaufmanniana tulips reflower more reliably (RHS). Soils that stay wet in summer make reflowering difficult (RHS): in Aosta the three warmest months bring about 226 mm of rain together.

Grey squirrels often dig up tulip bulbs: lay chicken wire over the bed until the leaves appear, or plant daffodils among them, which squirrels avoid (RHS). Tulips are toxic to dogs, cats and horses, the bulb most of all (ASPCA).

Sources: RHS, Wisconsin Horticulture Extension, ASPCA.

Tulip in nearby cities

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

CityDistanceDateDifference
Sion55 km19 September – 19 November39 days later
Turin80 km21 October – end of December71 days later
Annecy94 km15 October – end of December65 days later
Geneva105 km18 October – end of December68 days later
Novara106 km23 October – end of December73 days later
Fribourg119 km7 October – 30 December57 days later

Where to buy tulip 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).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant tulips in Aosta?

In Aosta, tulip: plant from 11 August to about 22 October. 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.

When is the last spring frost in Aosta?

Last spring frost around 6 June, first autumn frost around 10 September.

Other crops in Aosta, with their dates