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When to plant crocuses in Cincinnati: 10 October – end of December

In Cincinnati, crocus: plant from 10 October to the end of December. For planting stock, the places nearby include Fern (garden centre, 2 km) and Gardens at the Village Green (garden centre, 4 km); addresses and opening hours are below.

Bulbs are best planted early in the window: late-planted bulbs may flower later or less well. Late planting works only while the soil can be dug. Mulch after planting.

The average daily temperature here stays above 0 °C all winter, and at least three months average 7 °C or less: our rule of thumb for the winter cold spring bulbs need. Sources: Iowa State University Extension, Wisconsin Horticulture Extension, UNH Extension, RHS.

Crocus in Cincinnati: soil, season and weather

Nights then average below 0 °C in December–February; the coldest, January, averages -3.9 °C.

Planting10 October – end of December
First autumn frost9 November
Coldest nightsJanuary, -3.9 °C
Soil back at 1 °C in springalready in the first week of January
Daylight11:26 on 10 October
Daylight at the winter solstice9:25

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

Crocus in Cincinnati: 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 Cincinnati the average daily temperature stays at 10 °C or lower for about 21 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

Around Cincinnati, Columbus is 7 days earlier and Louisville 2 days later.

CityDistanceDateDifference
Frankfort108 km4 October – end of December6 days earlier
Lexington127 km8 October – end of December2 days earlier
Louisville146 km12 October – end of December2 days later
Indianapolis159 km7 October – 23 December3 days earlier
Columbus159 km3 October – 25 December7 days earlier
Fort Wayne223 km3 October – 10 December7 days earlier

Where to buy crocus for planting in Cincinnati

Planting stock goes into the ground from 10 October to the end of December; buy it before that. Within 15 km of Cincinnati OpenStreetMap lists 10 garden centres, 6 markets and 2 farm shops (collected 20 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant crocuses in Cincinnati?

In Cincinnati, crocus: plant from 10 October to the end of December. Bulbs are best planted early in the window: late-planted bulbs may flower later or less well. Late planting works only while the soil can be dug. Mulch after planting.

When is the last spring frost in Cincinnati?

Last spring frost around 11 April, first autumn frost around 9 November.

Other crops in Cincinnati, with their dates