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When to plant hyacinths in Treviso: 24 October – end of December

In Treviso, hyacinth: plant from 24 October to the end of December.

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 average daily temperature here stays above 0 °C all winter, and at least three months average 7 °C or less: our rule of thumb for the winter cold spring bulbs need. Sources: Iowa State University Extension, Wisconsin Horticulture Extension, UNH Extension, RHS.

Hyacinth in Treviso: soil, season and weather

Nights then average below 0 °C in January; the coldest, January, averages -1.1 °C.

Planting24 October – end of December
First autumn frost23 November
Coldest nightsJanuary, -1.1 °C
Soil back at 1 °C in springalready in the first week of January
Daylight10:32 on 24 October
Daylight at the winter solstice8:41

The same dates in Treviso hold for Garlic, Tulip, Daffodil and Crocus.

Hyacinth in Treviso: depth, winter cold, pests and pets

Plant hyacinths 10 cm deep, at least 7.5 cm apart (RHS). In the ground hyacinths are fully hardy, but in containers they can be frost tender in cold winters (RHS); here winter nights average below 0 °C, so wrap the pots or move them to a sheltered spot.

In Treviso the average daily temperature stays at 10 °C or lower for about 19 weeks a year (our estimate from ten years of monthly weather). For this bulb Wisconsin Horticulture Extension gives a cold period of 12–15 weeks at about 2–10 °C. The winter here gives that in the ground, so the bulbs need no pre-chilling.

Flowers get smaller in the years after planting: for full spikes, replace the bulbs or add a few new ones each autumn (RHS).

If squirrels are a problem, protect the bulbs with wire mesh (RHS). Hyacinths are toxic to dogs, cats and horses: intense vomiting and diarrhoea (ASPCA).

Sources: RHS, Wisconsin Horticulture Extension, ASPCA.

Hyacinth in nearby cities

Around Treviso, Trento is 13 days earlier and Venice 13 days later.

CityDistanceDateDifference
Venice27 km6 November – end of December13 days later
Padua40 km29 October – end of December5 days later
Vicenza55 km25 October – end of December1 day later
Udine89 km23 October – end of December1 day earlier
Trento97 km11 October – end of December13 days earlier
Verona101 km28 October – end of December4 days later

Where to buy hyacinth for planting in Treviso

Planting stock goes into the ground from 24 October to the end of December; buy it before that. Within 15 km of Treviso OpenStreetMap lists 6 garden centres, 1 farm-supply shop, 1 plant nursery, 5 markets and 2 farm shops (collected 27 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant hyacinths in Treviso?

In Treviso, hyacinth: plant from 24 October to the end of December. 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 Treviso?

Last spring frost around 19 March, first autumn frost around 23 November.

Other crops in Treviso, with their dates