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When to plant crocuses in San Marino: by 12 November

In San Marino, crocus: plant by 12 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 Oleificio Sapigni (farm shop, 7 km) and Oleificio Carlini (farm shop, 7 km); addresses and opening hours are below.

Crocus in San Marino: soil, season and weather

No month averages below 0 °C at night; the coldest nights, in January, average 2.2 °C.

Plantingby 12 November
First autumn frost12 December
Coldest nightsJanuary, 2.2 °C
Soil back at 1 °C in springalready in the first week of January
Daylight9:47 on 12 November
Daylight at the winter solstice8:54

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

Crocus in San Marino: 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 Marino the average daily temperature stays at 10 °C or lower for about 17 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.

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

All the nearest cities on our list plant crocus earlier than San Marino; the closest date is in Ancona, 1 day earlier.

CityDistanceDateDifference
Arezzo70 km22 October – end of December21 days earlier
Perugia92 km26 October – end of December17 days earlier
Ancona93 kmby 11 November1 day earlier
Florence97 kmby 28 October15 days earlier
Bologna108 km30 October – end of December13 days earlier
Modena144 km31 October – end of December12 days earlier

Where to buy crocus for planting in San Marino

Planting stock goes into the ground by 12 November; buy it before that. Within 15 km of San Marino OpenStreetMap lists 8 garden centres, 5 farm-supply shops, 1 plant nursery, 1 market and 4 farm shops (collected 20 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant crocuses in San Marino?

In San Marino, crocus: plant by 12 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 Marino?

Last spring frost around 9 February, first autumn frost around 12 December.

Other crops in San Marino, with their dates