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When to plant crocuses in Columbia: by 30 October

In Columbia, crocus: plant by 30 October. The winter here is too mild for our late-planting rule, so we give no later limit. For planting stock, the places nearby include Gardener's Outpost (garden centre, 2 km) and Southern Vistas, Inc. (garden centre, 4 km); addresses and opening hours are below.

Crocus in Columbia: soil, season and weather

No month averages below 0 °C at night; the coldest nights, in January, average 3.4 °C.

Plantingby 30 October
First autumn frost29 November
Coldest nightsJanuary, 3.4 °C
Soil back at 1 °C in springalready in the first week of January
Daylight10:53 on 30 October
Daylight at the winter solstice9:53

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

Crocus in Columbia: 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 Columbia the average daily temperature stays at 10 °C or lower for about 7 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 Columbia, Asheville is 27 days earlier and Macon 2 days later.

CityDistanceDateDifference
Charlotte138 kmby 14 October16 days earlier
Asheville226 km3 October – end of December27 days earlier
Macon276 kmby 1 November2 days later
Wilmington290 kmby 1 November2 days later
Raleigh294 kmby 20 October10 days earlier
Atlanta311 kmby 23 October7 days earlier

Where to buy crocus for planting in Columbia

Planting stock goes into the ground by 30 October; buy it before that. Within 15 km of Columbia OpenStreetMap lists 6 garden centres, 2 farm-supply shops and 3 markets (collected 28 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant crocuses in Columbia?

In Columbia, crocus: plant by 30 October. The winter here is too mild for our late-planting rule, so we give no later limit.

When is the last spring frost in Columbia?

Last spring frost around 9 March, first autumn frost around 29 November.

Other crops in Columbia, with their dates