When to plant zucchini in Olympia: 26 June – 29 August

In Olympia, zucchini: sow for seedlings from 15 May to 8 August; plant into a greenhouse from 5 June to 29 August; plant out into open ground from 26 June to 29 August. For plants and seeds, the places nearby include Ladyberry Produce (farm shop, 12 km); addresses and opening hours are below.

Zucchini in Olympia: soil, season and weather

In Olympia the soil, not frost, sets the date: the last frost is over around 19 March, but the top 7 cm of soil reaches 18 °C — the minimum on the zucchini card — only around 26 June, 99 days later.

Last spring frost	19 March
Top 7 cm of soil at 18 °C	26 June, 99 days after the last frost
First autumn frost	15 November, 142 days after the start
Days in the bed to the first harvest (card)	36
First harvest, if planted in this window	1 August – 4 October
Days left for picking	106
Daylight	15:43 on 5 June, 15:53 on 26 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, July, has 3 rainy days

The same dates in Olympia hold for Cucumber, Bell Pepper, Eggplant, Pumpkin and Watermelon.

Zucchini in Olympia: care after planting

Planted on 26 June: in the first weeks water every 4 days.

Pests and diseases of zucchini to watch for:

Weather in Olympia during the zucchini season

About 513 mm of rain falls in the season; July is the driest month (11 mm) and November the wettest (206 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	21.9	10.1	54	8	15:53
July	26	12.3	11	3	15:33
August	26.7	13.5	25	4	14:16
September	22.2	11.5	70	9	12:37
October	15.4	7.5	147	14	10:57
November	10	4.5	206	18	9:23

ERA5 2016–2025, Open-Meteo

Zucchini in nearby cities

All the nearest cities on our list plant zucchini earlier than Olympia; the closest date is in Vancouver, 4 days earlier.

City	Distance	Date	Difference
Seattle	77 km	21 June – 7 September	5 days earlier
Victoria	159 km	13 June – 4 October	13 days earlier
Portland	170 km	17 June – 5 September	9 days earlier
Salem	234 km	6 June – 31 August	20 days earlier
Vancouver	250 km	22 June – 31 August	4 days earlier
Eugene	332 km	19 June – 12 August	7 days earlier

Where to buy zucchini plants and seeds near Olympia

Buy plants ready to set out from 26 June to 29 August (from 5 June to 29 August for an unheated greenhouse); seed for raising your own is sown from 15 May to 8 August. Within 15 km of Olympia OpenStreetMap lists 5 garden centres, 1 plant nursery, 2 markets and 2 farm shops (collected 28 October 2026).

Ladyberry Produce — farm shop
Zangle Road Northeast 8038, 98506 Olympia · 12 km
Webster Forest Nursery — plant nursery
11 km
Farmer's Market — market
2 km
Spooners Farms — farm shop · sells: berries
6 km

Each window starts on the Greenly calendar date and ends on the last day that still leaves the crop’s days to harvest (from its card) before the average first autumn frost, plus six weeks of picking for crops harvested over weeks (tomatoes, peppers, aubergines, cucumbers, courgettes, pumpkins, watermelons, beans) — our rule; earlier in the window is safer.

Questions