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When to plant crocuses in Carson City: 22 September – end of December

In Carson City, crocus: plant from 22 September to the end of December. For planting stock, the places nearby include Greenhouse Garden Center (garden centre, 2 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 Carson City: soil, season and weather

Nights then average below 0 °C in December–March; the coldest, January, averages -3 °C.

Planting22 September – end of December
First autumn frost22 October
Coldest nightsJanuary, -3 °C
Soil back at 1 °C in spring12 January
Daylight12:11 on 22 September
Daylight at the winter solstice9:25

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

Crocus in Carson City: 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 Carson City the average daily temperature stays at 10 °C or lower for about 26 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 Carson City, Elko is 9 days earlier and Sacramento 50 days later.

CityDistanceDateDifference
Reno41 km28 September – end of December6 days later
Sacramento162 kmby 11 November50 days later
Stockton188 kmby 3 November42 days later
Fresno268 kmby 5 November44 days later
Redding274 kmby 11 November50 days later
Elko391 km13 September – 15 November9 days earlier

Where to buy crocus for planting in Carson City

Planting stock goes into the ground from 22 September to the end of December; buy it before that. Within 15 km of Carson City OpenStreetMap lists 3 garden centres and 1 market (collected 28 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant crocuses in Carson City?

In Carson City, crocus: plant from 22 September 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 Carson City?

Last spring frost around 1 May, first autumn frost around 22 October.

Other crops in Carson City, with their dates