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When to plant hyacinths in St. John's: 11 October – 1 December

In St. John's, hyacinth: plant from 11 October to about 1 December. For planting stock, the places nearby include The Seed Company (garden centre, 1 km); addresses and opening hours are below.

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 St. John's: soil, season and weather

Nights then average below 0 °C in December–April; the coldest, February, averages -6.9 °C.

Planting11 October – 1 December
First autumn frost10 November
Coldest nightsFebruary, -6.9 °C
Soil back at 1 °C in spring3 April
Daylight11:09 on 11 October
Daylight at the winter solstice8:26

The same dates in St. John's hold for Garlic, Tulip, Daffodil and Crocus.

Hyacinth in St. John's: 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 St. John's the average daily temperature stays at 10 °C or lower for about 35 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 St. John's; the closest date is in Halifax, 1 day earlier.

CityDistanceDateDifference
Charlottetown805 km3 October – 20 November8 days earlier
Halifax897 km10 October – 1 December1 day earlier
Moncton933 km5 October – 17 November6 days earlier
Fredericton1,077 km28 September – 11 November13 days earlier
Augusta1,365 km4 October – 20 November7 days earlier
Saguenay1,366 km22 September – 30 October19 days earlier

Where to buy hyacinth for planting in St. John's

Planting stock goes into the ground from 11 October to about 1 December; buy it before that. Within 15 km of St. John's OpenStreetMap lists 3 garden centres and 2 markets (collected 20 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant hyacinths in St. John's?

In St. John's, hyacinth: plant from 11 October to about 1 December. 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 St. John's?

Last spring frost around 19 May, first autumn frost around 10 November.

Other crops in St. John's, with their dates