Greenly Garden
Get the app
EN

When to plant crocuses in Sendai: 24 October – end of December

In Sendai, crocus: plant from 24 October to the end of December. For planting stock, the places nearby include marché lien (farm shop, 12 km) and Greenhouse Miyama (garden centre, 12 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 Sendai: soil, season and weather

Nights then average below 0 °C in December–February; the coldest, January, averages -2.7 °C.

Planting24 October – end of December
First autumn frost23 November
Coldest nightsJanuary, -2.7 °C
Soil back at 1 °C in springalready in the first week of January
Daylight10:54 on 24 October
Daylight at the winter solstice9:30

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

Crocus in Sendai: 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 Sendai the average daily temperature stays at 10 °C or lower for about 22 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 Sendai, Sapporo is 37 days earlier and Niigata 27 days later.

CityDistanceDateDifference
Niigata165 km20 November – end of December27 days later
Tokyo305 km14 November – end of December21 days later
Hamamatsu485 kmby 18 November25 days later
Nagoya493 km10 November – end of December17 days later
Sapporo534 km17 September – 31 October37 days earlier
Kyoto582 km7 November – end of December14 days later

Where to buy crocus for planting in Sendai

Planting stock goes into the ground from 24 October to the end of December; buy it before that. Within 15 km of Sendai OpenStreetMap lists 2 garden centres, 1 farm-supply shop, 4 markets and 2 farm shops (collected 28 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant crocuses in Sendai?

In Sendai, crocus: plant from 24 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 Sendai?

Last spring frost around 31 March, first autumn frost around 23 November.

Other crops in Sendai, with their dates