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When to plant hyacinths in Kaluga: 11 September – 5 November

In Kaluga, hyacinth: plant from 11 September to about 5 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).

Hyacinth in Kaluga: soil, season and weather

Nights then average below 0 °C in November–March; the coldest, January, averages -8.7 °C.

Planting11 September – 5 November
First autumn frost11 October
Coldest nightsJanuary, -8.7 °C
Soil back at 1 °C in spring30 March
Daylight13:04 on 11 September
Daylight at the winter solstice7:16

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

Hyacinth in Kaluga: 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 Kaluga the average daily temperature stays at 10 °C or lower for about 31 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

Around Kaluga, Tver is 1 day earlier and Ryazan 12 days later.

CityDistanceDateDifference
Tula95 km15 September – 4 November4 days later
Moscow161 km14 September – 2 November3 days later
Oryol174 km16 September – 10 November5 days later
Bryansk190 km20 September – 11 November9 days later
Ryazan221 km23 September – 5 November12 days later
Tver260 km10 September – 1 November1 day earlier

Where to buy hyacinth for planting in Kaluga

Planting stock goes into the ground from 11 September to about 5 November; buy it before that. Within 15 km of Kaluga OpenStreetMap lists 19 garden centres, 1 plant nursery, 11 markets and 1 farm shop (collected 27 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant hyacinths in Kaluga?

In Kaluga, hyacinth: plant from 11 September to about 5 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 Kaluga?

Last spring frost around 28 April, first autumn frost around 11 October.

Other crops in Kaluga, with their dates