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When to plant crocuses in San Sebastián: by 3 November

In San Sebastián, crocus: plant by 3 November. The winter here is too mild for our late-planting rule, so we give no later limit. For planting stock, the places nearby include Frutería Maribel (farm shop, 0 km) and Olasagasti (farm shop, 6 km); addresses and opening hours are below.

Crocus in San Sebastián: soil, season and weather

No month averages below 0 °C at night; the coldest nights, in January, average 5 °C.

Plantingby 3 November
First autumn frost3 December
Coldest nightsJanuary, 5 °C
Soil back at 1 °C in springalready in the first week of January
Daylight10:13 on 3 November
Daylight at the winter solstice8:58

The same dates in San Sebastián hold for Garlic, Tulip, Daffodil and Hyacinth.

Crocus in San Sebastián: depth, winter cold, pests and pets

Plant Dutch crocuses (Crocus vernus) about 12 cm deep and 9 cm apart; smaller species go 7–10 cm deep (RHS).

In San Sebastián the average daily temperature stays at 10 °C or lower for about 11 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. That is less than the bulbs need, and without more cold they may not flower properly. The cold can also be given in a refrigerator at about 2–7 °C, as Wisconsin Horticulture Extension does for crocuses forced in pots.

Crocuses multiply on their own (they naturalise); in a lawn, hold off mowing until their leaves die back (RHS).

Birds, squirrels and rodents damage crocuses; planting under metal mesh may reduce losses (RHS). Spring crocus gives dogs and cats vomiting and diarrhoea; do not confuse it with autumn crocus (Colchicum), which is very toxic (Pet Poison Helpline).

Sources: RHS, Wisconsin Horticulture Extension, Pet Poison Helpline.

Crocus in nearby cities

Around San Sebastián, Vitoria-Gasteiz is 9 days earlier and Bilbao 23 days later.

CityDistanceDateDifference
Bayonne45 kmby 17 November14 days later
Pamplona63 km31 October – end of December3 days earlier
Vitoria-Gasteiz77 km25 October – end of December9 days earlier
Bilbao77 kmby 26 November23 days later
Logroño102 kmby 4 November1 day later
Pau131 kmby 4 November1 day later

Where to buy crocus for planting in San Sebastián

Planting stock goes into the ground by 3 November; buy it before that. Within 15 km of San Sebastián OpenStreetMap lists 4 garden centres, 3 farm-supply shops, 6 markets and 4 farm shops (collected 27 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant crocuses in San Sebastián?

In San Sebastián, crocus: plant by 3 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 San Sebastián?

Last spring frost around 22 January, first autumn frost around 3 December.

Other crops in San Sebastián, with their dates