When to plant eggplants in Olympia: 26 June – 26 July

In Olympia, eggplant: sow for seedlings from 6 April to 27 May; plant into a greenhouse from 5 June to 26 July; plant out into open ground from 26 June to 26 July. For plants and seeds, the places nearby include Underhill Plants (garden centre, 1 km) and Bark & Garden Center (garden centre, 4 km); addresses and opening hours are below.

Eggplant 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 eggplant 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
Into an unheated greenhouse	5 June – 26 July; June outside: 10.1 °C at night, 21.9 °C by day; card 21–29 °C
First autumn frost	15 November, 142 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	4 September – 4 October
Days left for picking	72
Daylight	14:12 on 27 April, 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, Zucchini, Pumpkin and Watermelon.

Eggplant in Olympia: care after planting

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

Feeding, by the card’s schedule from that day:

26 June — feed: balanced (NPK)
24 July — feed: nitrogen

Pests and diseases of eggplant to watch for:

Dates count from the first planting day of the window above; a later planting moves them by as many days.

Weather in Olympia during the eggplant season

No month of the season averages above the eggplant card's 21–29 °C by day; the warmest, August, averages 26.7 °C. Months that stay below 21 °C even by day on average: October (15.4 °C) and November (10 °C). Nights average below 21 °C in every month of the season, from 4.5 °C to 13.5 °C.

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

Eggplant in nearby cities

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

City	Distance	Date	Difference
Seattle	77 km	21 June – 4 August	5 days earlier
Victoria	159 km	13 June – 31 August	13 days earlier
Portland	170 km	17 June – 2 August	9 days earlier
Salem	234 km	6 June – 28 July	20 days earlier
Vancouver	250 km	22 June – 28 July	4 days earlier
Eugene	332 km	19 June – 9 July	7 days earlier

Where to buy eggplant plants and seeds near Olympia

Buy plants ready to set out from 26 June to 26 July (from 5 June to 26 July for an unheated greenhouse); seed for raising your own is sown from 6 April to 27 May. Within 15 km of Olympia OpenStreetMap lists 5 garden centres, 1 plant nursery, 2 markets and 2 farm shops (collected 28 October 2026).

Underhill Plants — garden centre
Mon–Tue closed; Wed–Fri 11:00–17:00; Sat–Sun 10:00–17:00 · 1 km
Bark & Garden Center — garden centre
Mon–Sun 09:00–17:00 · 4 km
Hefty Harvest — garden centre
Mon–Sun 10:00–18:00 · 4 km
Olympia Farmers Market — market
N Captiol Way 700, 98501 Olympia · Jan–Mar: Sat 10:00–15:00; Apr–Oct: Thu–Sun 10:00–15:00; Nov–Dec: Sat, Sun 10:00–15:00 · 1 km · olympiafarmersmarket.com

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.

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