When to plant crocuses in Omaha: 26 September – 30 November

In Omaha, crocus: plant from 26 September to about 30 November. For planting stock, the places nearby include Exist Green (farm shop, 4 km) and Wenninghoff's (farm shop, 11 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 date is about two weeks before the average daily temperature here falls below 0 °C (ten years of weather): an estimate, not the day the ground freezes, and a cold spell can freeze it earlier. Sources: Iowa State University Extension, Wisconsin Horticulture Extension, UNH Extension, RHS, how the ground freezes (NRC Canada, CBD-26).

Crocus in Omaha: soil, season and weather

Nights then average below 0 °C in December–February; the coldest, January, averages -8.1 °C.

Planting	26 September – 30 November
First autumn frost	26 October
Coldest nights	January, -8.1 °C
Soil back at 1 °C in spring	7 February
Daylight	12:01 on 26 September
Daylight at the winter solstice	9:12

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

Crocus in Omaha: 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 Omaha the average daily temperature stays at 10 °C or lower for about 23 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 Omaha, Sioux Falls is 5 days earlier and Kansas City 6 days later.

City	Distance	Date	Difference
Lincoln	79 km	28 September – 7 December	2 days later
Des Moines	198 km	27 September – 29 November	1 day later
Grand Island	206 km	27 September – 1 December	1 day later
Topeka	249 km	29 September – 30 December	3 days later
Sioux Falls	262 km	21 September – 16 November	5 days earlier
Kansas City	267 km	2 October – end of December	6 days later

Where to buy crocus for planting in Omaha

Planting stock goes into the ground from 26 September to about 30 November; buy it before that. Within 15 km of Omaha OpenStreetMap lists 8 garden centres, 1 plant nursery, 5 markets and 2 farm shops (collected 20 October 2026).

Exist Green — farm shop
Underwood Avenue 4914, 68132-2414 Omaha · Tue–Fri 11:00–19:00; Sat 10:00–18:00 · 4 km · existgreen.com
Wenninghoff's — farm shop
Wenninghoff Road 6707, 68122 Omaha · Mon–Fri 09:00–19:00; Sat 09:00–17:00; Sun 10:00–17:00 · 11 km · linktr.ee
Hy-Vee Garden Center — garden centre
10 km
Moore's Landscaping & Nursery — garden centre
14 km
Canoyer Garden Center - Papillion — garden centre
14 km
Grass Pad — garden centre
12 km
Jerusalem Grocery — market
14 km
Trees, Shrubs and More — plant nursery
11 km

Questions