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When to plant crocuses in Norwich: 29 October – end of December

In Norwich, crocus: plant from 29 October to the end of December. For planting stock, the places nearby include The Egg Shed (farm shop, 14 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 Norwich: soil, season and weather

No month averages below 0 °C at night; the coldest nights, in January, average 1.7 °C.

Planting29 October – end of December
First autumn frost28 November
Coldest nightsJanuary, 1.7 °C
Soil back at 1 °C in springalready in the first week of January
Daylight9:47 on 29 October
Daylight at the winter solstice7:38

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

Crocus in Norwich: 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 Norwich 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 Norwich, Coventry is 11 days earlier and Ipswich 1 day later.

CityDistanceDateDifference
Ipswich64 km30 October – end of December1 day later
Cambridge93 km25 October – end of December4 days earlier
London158 km24 October – end of December5 days earlier
Hull165 km25 October – end of December4 days earlier
Coventry192 km18 October – end of December11 days earlier
Sheffield203 km23 October – end of December6 days earlier

Where to buy crocus for planting in Norwich

Planting stock goes into the ground from 29 October to the end of December; buy it before that. Within 15 km of Norwich OpenStreetMap lists 20 garden centres, 1 farm-supply shop, 1 plant nursery, 1 market and 14 farm shops (collected 20 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant crocuses in Norwich?

In Norwich, crocus: plant from 29 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 Norwich?

Last spring frost around 31 March, first autumn frost around 28 November.

Other crops in Norwich, with their dates