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When to plant crocuses in Constantine: by 13 November

In Constantine, crocus: plant by 13 November. The winter here is too mild for our late-planting rule, so we give no later limit.

Crocus in Constantine: soil, season and weather

No month averages below 0 °C at night; the coldest nights, in January, average 2.3 °C.

Plantingby 13 November
First autumn frost13 December
Coldest nightsJanuary, 2.3 °C
Soil back at 1 °C in springalready in the first week of January
Daylight10:19 on 13 November
Daylight at the winter solstice9:41

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

Crocus in Constantine: 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 Constantine the average daily temperature stays at 10 °C or lower for about 12 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 Constantine, Girona is 13 days earlier and Palermo 10 days later.

CityDistanceDateDifference
Palermo628 km23 November – end of December10 days later
Ajaccio644 kmby 9 November4 days earlier
Barcelona677 kmby 12 November1 day earlier
Girona704 kmby 31 October13 days earlier
Manresa725 kmby 2 November11 days earlier
Lorca752 kmby 15 November2 days later

Where to buy crocus for planting in Constantine

Planting stock goes into the ground by 13 November; buy it before that. Within 15 km of Constantine OpenStreetMap lists 14 markets (collected 27 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant crocuses in Constantine?

In Constantine, crocus: plant by 13 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 Constantine?

Last spring frost around 20 February, first autumn frost around 13 December.

Other crops in Constantine, with their dates