Greenly Garden
Get the app
EN

When to plant hyacinths in Mendoza: by 18 May

In Mendoza, hyacinth: plant by 18 May. The winter here is too mild for our late-planting rule, so we give no later limit.

Hyacinth in Mendoza: soil, season and weather

No month averages below 0 °C at night; the coldest nights, in July, average 3.1 °C.

Plantingby 18 May
First autumn frost17 June
Coldest nightsJuly, 3.1 °C
Soil back at 1 °C in springalready in the first week of July
Daylight10:23 on 18 May
Daylight at the winter solstice9:59

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

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

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

In Mendoza the average daily temperature stays at 10 °C or lower for about 9 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. That is less than the bulbs need, and without more cold they may not flower properly. Where winters are not cold enough for long enough, LSU AgCenter keeps tulip and hyacinth bulbs in the refrigerator for at least six to eight weeks before planting, and plants them only once the soil has cooled: warm soil can cancel the chilling. Keep fruit out of that refrigerator — ripening fruit gives off ethylene, which harms the flowers (Wisconsin Horticulture Extension).

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, LSU AgCenter, ASPCA.

Hyacinth in nearby cities

Around Mendoza, San Rafael is 12 days earlier and San Luis 6 days later.

CityDistanceDateDifference
San Juan153 kmby 21 May3 days later
San Rafael198 kmby 6 May12 days earlier
Rancagua227 kmby 13 May5 days earlier
San Luis238 kmby 24 May6 days later
Curicó322 kmby 8 May10 days earlier
Talca383 kmby 14 May4 days earlier

Where to buy hyacinth for planting in Mendoza

Planting stock goes into the ground by 18 May; buy it before that. Within 15 km of Mendoza OpenStreetMap lists 13 garden centres, 3 plant nurseries, 12 markets and 2 farm shops (collected 7 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant hyacinths in Mendoza?

In Mendoza, hyacinth: plant by 18 May. The winter here is too mild for our late-planting rule, so we give no later limit.

When is the last spring frost in Mendoza?

Last spring frost around 10 August, first autumn frost around 17 June.

Other crops in Mendoza, with their dates