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When to plant crocuses in Riga: 14 October – 8 December

In Riga, crocus: plant from 14 October to about 8 December. For planting stock, the places nearby include Sidrabi (farm shop, 3 km) and Enhars (farm shop, 5 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 Riga: soil, season and weather

Nights then average below 0 °C in December–March; the coldest, January, averages -3.6 °C.

Planting14 October – 8 December
First autumn frost13 November
Coldest nightsJanuary, -3.6 °C
Soil back at 1 °C in spring12 February
Daylight10:32 on 14 October
Daylight at the winter solstice6:44

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

Crocus in Riga: 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 Riga the average daily temperature stays at 10 °C or lower for about 30 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 Riga, Pskov is 25 days earlier and Kaliningrad 1 day later.

CityDistanceDateDifference
Vilnius262 km20 September – 26 November24 days earlier
Pskov271 km19 September – 17 November25 days earlier
Tallinn279 km2 October – 26 November12 days earlier
Kaliningrad335 km15 October – 30 December1 day later
Maladzyechna339 km19 September – 22 November25 days earlier
Lida350 km30 September – 27 November14 days earlier

Where to buy crocus for planting in Riga

Planting stock goes into the ground from 14 October to about 8 December; buy it before that. Within 15 km of Riga OpenStreetMap lists 4 garden centres, 1 farm-supply shop, 2 plant nurseries, 29 markets and 2 farm shops (collected 7 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant crocuses in Riga?

In Riga, crocus: plant from 14 October to about 8 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 Riga?

Last spring frost around 15 April, first autumn frost around 13 November.

Other crops in Riga, with their dates