When to plant zucchini in Oklahoma City: 15 April – 24 August

In Oklahoma City, zucchini: sow for seedlings from 4 March to 3 August; plant into a greenhouse from 25 March to 24 August; plant out into open ground from 15 April to 24 August. For plants and seeds, the places nearby include Smith Farm and Garden (garden centre, 6 km) and Walmart Garden Center (garden centre, 9 km); addresses and opening hours are below.

Zucchini in Oklahoma City: soil, season and weather

In Oklahoma City the soil, not frost, sets the date: the last frost is over around 14 March, but the top 7 cm of soil reaches 18 °C — the minimum on the zucchini card — only around 15 April, 32 days later.

Last spring frost	14 March
Top 7 cm of soil at 18 °C	15 April, 32 days after the last frost
First autumn frost	10 November, 209 days after the start
Days in the bed to the first harvest (card)	36
First harvest, if planted in this window	21 May – 29 September
Days left for picking	173
Daylight	12:18 on 25 March, 13:04 on 15 April
Watering outdoors when fruiting (card)	every 3 days; the driest month, November, has 5 rainy days

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

Zucchini in Oklahoma City: care after planting

Planted on 15 April: in the first weeks water every 4 days.

Pests and diseases of zucchini to watch for:

Weather in Oklahoma City during the zucchini season

About 695 mm of rain falls in the season; November is the driest month (50 mm) and April the wettest (123 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
April	22.6	10.7	123	10	13:04
May	26.6	16.2	119	12	14:01
June	31.7	21.4	93	9	14:32
July	34.2	23.8	68	9	14:20
August	33.4	23.2	70	8	13:31
September	30.1	19.8	87	7	12:26
October	23.9	13.2	85	7	11:20
November	16.8	6.7	50	5	10:19

ERA5 2016–2025, Open-Meteo

Zucchini in nearby cities

Around Oklahoma City, Fort Worth is 24 days earlier and Wichita 17 days later.

City	Distance	Date	Difference
Lawton	126 km	4 April – 25 August	11 days earlier
Tulsa	157 km	29 April – 31 August	14 days later
Wichita	247 km	2 May – 13 August	17 days later
Fort Smith	285 km	1 May – 1 September	16 days later
Fort Worth	305 km	22 March – 13 September	24 days earlier
Dallas	306 km	27 March – 18 September	19 days earlier

Where to buy zucchini plants and seeds near Oklahoma City

Buy plants ready to set out from 15 April to 24 August (from 25 March to 24 August for an unheated greenhouse); seed for raising your own is sown from 4 March to 3 August. Within 15 km of Oklahoma City OpenStreetMap lists 3 garden centres, 2 farm-supply shops and 4 markets (collected 20 October 2026).

Walmart Garden Center — garden centre
7 km
Bi-Rite Market — market
3 km
Smith Farm and Garden — garden centre
3733 NW 10th Street, 73107 Oklahoma City · Mon–Fri 08:30–17:30; Sat 09:00–13:00; Sun, public holidays closed · 6 km · smithfarmandgarden.com
Walmart Garden Center — garden centre
East Interstate 240 Service Road 100, 73149 Oklahoma City · 9 km · walmart.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.

Questions