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When to plant hyacinths in Olympia: 16 October – end of December

In Olympia, hyacinth: plant from 16 October to the end of December. For planting stock, the places nearby include Underhill Plants (garden centre, 1 km) and Eastside Urban Farm & Garden Center (garden centre, 3 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 average daily temperature here stays above 0 °C all winter, and at least three months average 7 °C or less: our rule of thumb for the winter cold spring bulbs need. Sources: Iowa State University Extension, Wisconsin Horticulture Extension, UNH Extension, RHS.

Hyacinth in Olympia: soil, season and weather

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

Planting16 October – end of December
First autumn frost15 November
Coldest nightsFebruary, 1.5 °C
Soil back at 1 °C in springalready in the first week of January
Daylight10:54 on 16 October
Daylight at the winter solstice8:30

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

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

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

In Olympia the average daily temperature stays at 10 °C or lower for about 25 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 Olympia, Eugene is 17 days earlier and Victoria 36 days later.

CityDistanceDateDifference
Seattle77 km25 October – end of December9 days later
Victoria159 km21 November – end of December36 days later
Portland170 km23 October – end of December7 days later
Salem234 km18 October – end of December2 days later
Vancouver250 km18 October – end of December2 days later
Eugene332 km29 September – end of December17 days earlier

Where to buy hyacinth for planting in Olympia

Planting stock goes into the ground from 16 October to the end of December; buy it before that. Within 15 km of Olympia OpenStreetMap lists 5 garden centres, 1 plant nursery, 2 markets and 2 farm shops (collected 28 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant hyacinths in Olympia?

In Olympia, hyacinth: plant from 16 October to the end of 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 Olympia?

Last spring frost around 19 March, first autumn frost around 15 November.

Other crops in Olympia, with their dates