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When to plant hyacinths in Alcázar de San Juan: by 2 November

In Alcázar de San Juan, hyacinth: plant by 2 November. The winter here is too mild for our late-planting rule, so we give no later limit.

Hyacinth in Alcázar de San Juan: soil, season and weather

No month averages below 0 °C at night; the coldest nights, in January, average 1.5 °C.

Plantingby 2 November
First autumn frost2 December
Coldest nightsJanuary, 1.5 °C
Soil back at 1 °C in springalready in the first week of January
Daylight10:30 on 2 November
Daylight at the winter solstice9:23

The same dates in Alcázar de San Juan hold for Garlic, Tulip, Daffodil and Crocus.

Hyacinth in Alcázar de San Juan: depth, winter cold, pests and pets

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

In Alcázar de San Juan the average daily temperature stays at 10 °C or lower for about 16 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 Alcázar de San Juan, Cuenca (Spain) is 19 days earlier and Toledo 4 days later.

CityDistanceDateDifference
Ciudad Real76 kmby 29 October4 days earlier
Toledo88 kmby 6 November4 days later
Cuenca (Spain)119 km14 October – end of December19 days earlier
Madrid122 kmby 28 October5 days earlier
Albacete125 kmby 27 October6 days earlier
Guadalajara (Spain)138 kmby 25 October8 days earlier

Where to buy hyacinth for planting in Alcázar de San Juan

Planting stock goes into the ground by 2 November; buy it before that. Within 15 km of Alcázar de San Juan OpenStreetMap lists 1 garden centre and 1 market (collected 28 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant hyacinths in Alcázar de San Juan?

In Alcázar de San Juan, hyacinth: plant by 2 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 Alcázar de San Juan?

Last spring frost around 15 March, first autumn frost around 2 December.

Other crops in Alcázar de San Juan, with their dates