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When to plant crocuses in Poltava: 23 September – 29 November

In Poltava, crocus: plant from 23 September to about 29 November.

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 Poltava: soil, season and weather

Nights then average below 0 °C in December–March; the coldest, January, averages -5.7 °C.

Planting23 September – 29 November
First autumn frost23 October
Coldest nightsJanuary, -5.7 °C
Soil back at 1 °C in spring7 February
Daylight12:11 on 23 September
Daylight at the winter solstice8:08

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

Crocus in Poltava: 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 Poltava 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 Poltava, Sumy is 3 days earlier and Zaporizhzhia 20 days later.

CityDistanceDateDifference
Kharkiv129 km21 September – 23 November2 days earlier
Dnipro131 km9 October – 12 December16 days later
Sumy148 km20 September – 20 November3 days earlier
Pavlohrad152 km7 October – 7 December14 days later
Cherkasy181 km12 October – 10 December19 days later
Zaporizhzhia199 km13 October – 20 December20 days later

Where to buy crocus for planting in Poltava

Planting stock goes into the ground from 23 September to about 29 November; buy it before that. Within 15 km of Poltava OpenStreetMap lists 8 garden centres, 2 farm-supply shops, 12 markets and 5 farm shops (collected 7 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant crocuses in Poltava?

In Poltava, crocus: plant from 23 September to about 29 November. 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 Poltava?

Last spring frost around 6 April, first autumn frost around 23 October.

Other crops in Poltava, with their dates