Greenly Garden
Get the app
EN

When to plant crocuses in Tulsa: by 18 October

In Tulsa, crocus: plant by 18 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 Garden Deva (garden centre, 2 km) and Grumpy's Garden (garden centre, 2 km); addresses and opening hours are below.

Crocus in Tulsa: soil, season and weather

Nights then average below 0 °C in January; the coldest, January, averages -0.9 °C.

Plantingby 18 October
First autumn frost17 November
Coldest nightsJanuary, -0.9 °C
Soil back at 1 °C in springalready in the first week of January
Daylight11:12 on 18 October
Daylight at the winter solstice9:42

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

Crocus in Tulsa: 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 Tulsa the average daily temperature stays at 10 °C or lower for about 14 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 Tulsa, Wichita is 18 days earlier and Fort Smith 1 day later.

CityDistanceDateDifference
Oklahoma City157 kmby 11 October7 days earlier
Fayetteville165 km11 October – end of December7 days earlier
Joplin168 km2 October – end of December16 days earlier
Fort Smith169 kmby 19 October1 day later
Wichita209 km30 September – end of December18 days earlier
Lawton278 kmby 12 October6 days earlier

Where to buy crocus for planting in Tulsa

Planting stock goes into the ground by 18 October; buy it before that. Within 15 km of Tulsa OpenStreetMap lists 8 garden centres, 2 farm-supply shops, 1 plant nursery, 1 market and 1 farm shop (collected 20 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant crocuses in Tulsa?

In Tulsa, crocus: plant by 18 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 Tulsa?

Last spring frost around 6 March, first autumn frost around 17 November.

Other crops in Tulsa, with their dates