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When to plant hyacinths in Opole: 19 October – end of December

In Opole, hyacinth: plant from 19 October to the end of December. For planting stock, the places nearby include Grene (farm supply, 3 km) and Bajek (garden centre, 6 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.

Hyacinth in Opole: soil, season and weather

Nights then average below 0 °C in December–February; the coldest, January, averages -2.6 °C.

Planting19 October – end of December
First autumn frost18 November
Coldest nightsJanuary, -2.6 °C
Soil back at 1 °C in spring10 January
Daylight10:33 on 19 October
Daylight at the winter solstice7:58

The same dates in Opole hold for Garlic, Tulip, Daffodil and Crocus.

Hyacinth in Opole: depth, winter cold, pests and pets

Plant hyacinths 10 cm deep, at least 7.5 cm apart (RHS). In the ground hyacinths are fully hardy, but in containers they can be frost tender in cold winters (RHS); here winter nights average below 0 °C, so wrap the pots or move them to a sheltered spot.

In Opole 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 12–15 weeks at about 2–10 °C. The winter here gives that in the ground, so the bulbs need no pre-chilling.

Flowers get smaller in the years after planting: for full spikes, replace the bulbs or add a few new ones each autumn (RHS).

If squirrels are a problem, protect the bulbs with wire mesh (RHS). Hyacinths are toxic to dogs, cats and horses: intense vomiting and diarrhoea (ASPCA).

Sources: RHS, Wisconsin Horticulture Extension, ASPCA.

Hyacinth in nearby cities

All the nearest cities on our list plant hyacinth earlier than Opole; the closest date is in Katowice, 2 days earlier.

CityDistanceDateDifference
Wrocław79 km12 October – end of December7 days earlier
Częstochowa85 km11 October – 19 December8 days earlier
Katowice90 km17 October – 22 December2 days earlier
Ostrava97 km10 October – end of December9 days earlier
Kraków158 km2 October – 28 December17 days earlier
Łódź161 km5 October – 22 December14 days earlier

Where to buy hyacinth for planting in Opole

Planting stock goes into the ground from 19 October to the end of December; buy it before that. Within 15 km of Opole OpenStreetMap lists 4 garden centres, 2 farm-supply shops and 2 markets (collected 28 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant hyacinths in Opole?

In Opole, hyacinth: plant from 19 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 Opole?

Last spring frost around 15 April, first autumn frost around 18 November.

Other crops in Opole, with their dates