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When to plant hyacinths in Istanbul: by 26 November

In Istanbul, hyacinth: plant by 26 November. The winter here is too mild for our late-planting rule, so we give no later limit. For planting stock, the places nearby include Attip alnabawi (farm shop, 3 km) and Metin Mini Hal (farm shop, 4 km); addresses and opening hours are below.

Hyacinth in Istanbul: soil, season and weather

No month averages below 0 °C at night; the coldest nights, in January, average 3.8 °C.

Plantingby 26 November
First autumn frost26 December
Coldest nightsJanuary, 3.8 °C
Soil back at 1 °C in springalready in the first week of January
Daylight9:35 on 26 November
Daylight at the winter solstice9:13

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

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

Plant hyacinths 10 cm deep, at least 7.5 cm apart (RHS).

In Istanbul the average daily temperature stays at 10 °C or lower for about 15 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 Istanbul; the closest date is in Izmir, 19 days earlier.

CityDistanceDateDifference
Bursa90 kmby 6 November20 days earlier
Eskişehir190 km5 October – end of December52 days earlier
Izmir329 kmby 7 November19 days earlier
Ankara349 km4 October – end of December53 days earlier
Bucharest447 km20 October – end of December37 days earlier
Konya461 km10 October – end of December47 days earlier

Where to buy hyacinth for planting in Istanbul

Planting stock goes into the ground by 26 November; buy it before that. Within 15 km of Istanbul OpenStreetMap lists 10 garden centres, 4 farm-supply shops, 1 plant nursery, 88 markets and 9 farm shops (collected 7 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant hyacinths in Istanbul?

In Istanbul, hyacinth: plant by 26 November. The winter here is too mild for our late-planting rule, so we give no later limit.

When is the last spring frost in Istanbul?

Last spring frost around 28 February, first autumn frost around 26 December.

Other crops in Istanbul, with their dates