When to plant hyacinths in Bariloche: 12 December – 14 May

In Bariloche, hyacinth: plant from 12 December to about 14 May.

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 Bariloche: soil, season and weather

Nights then average below 0 °C in May–October; the coldest, July, averages -5 °C.

Planting	12 December – 14 May
First autumn frost	11 January
Coldest nights	July, -5 °C
Soil back at 1 °C in spring	already in the first week of July
Daylight	15:05 on 12 December
Daylight at the winter solstice	9:12

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

Hyacinth in Bariloche: 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 Bariloche the average daily temperature stays at 10 °C or lower for about 43 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 later than Bariloche; the closest date is in Temuco, 132 days later.

City	Distance	Date	Difference
Puerto Montt	141 km	by 7 May	146 days later
Osorno	166 km	by 3 May	142 days later
Valdivia	222 km	by 15 May	154 days later
Temuco	290 km	by 23 April	132 days later
Neuquén	369 km	by 10 May	149 days later
Los Ángeles	419 km	by 2 May	141 days later

Where to buy hyacinth for planting in Bariloche

Planting stock goes into the ground from 12 December to about 14 May; buy it before that. Within 15 km of Bariloche OpenStreetMap lists 6 garden centres, 5 markets and 2 farm shops (collected 27 October 2026).

Vivero La Araucaria — garden centre
11 km
Lila — garden centre
13 km
Ferias Municipales — market
1 km
Mercado Comunitario Bariloche — market
4 km
Mercado del Lago — market
5 km
La Orquita — market
6 km
Agropecuaria Manos Criollas — farm shop
4 km
Estación Este — farm shop
5 km

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