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When to plant hyacinths in Bilbao: by 26 November

In Bilbao, hyacinth: plant by 26 November. The winter here is too mild for our late-planting rule, so we give no later limit.

Hyacinth in Bilbao: soil, season and weather

No month averages below 0 °C at night; the coldest nights, in January, average 4 °C.

Plantingby 26 November
First autumn frost26 December
Coldest nightsJanuary, 4 °C
Soil back at 1 °C in springalready in the first week of January
Daylight9:22 on 26 November
Daylight at the winter solstice8:58

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

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

Plant hyacinths 10 cm deep, at least 7.5 cm apart (RHS).

In Bilbao the average daily temperature stays at 10 °C or lower for about 15 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

All the nearest cities on our list plant hyacinth earlier than Bilbao; the closest date is in Bayonne, 9 days earlier.

CityDistanceDateDifference
Vitoria-Gasteiz50 km25 October – end of December32 days earlier
San Sebastián77 kmby 3 November23 days earlier
Logroño96 kmby 4 November22 days earlier
Pamplona116 km31 October – end of December26 days earlier
Burgos120 km18 October – end of December39 days earlier
Bayonne121 kmby 17 November9 days earlier

Where to buy hyacinth for planting in Bilbao

Planting stock goes into the ground by 26 November; buy it before that. Within 15 km of Bilbao OpenStreetMap lists 8 garden centres, 4 farm-supply shops, 20 markets and 2 farm shops (collected 7 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant hyacinths in Bilbao?

In Bilbao, hyacinth: plant by 26 November. The winter here is too mild for our late-planting rule, so we give no later limit.

When is the last spring frost in Bilbao?

Last spring frost around 14 March, first autumn frost around 26 December.

Other crops in Bilbao, with their dates