When to plant zucchini in Tulsa: 29 April – 31 August

In Tulsa, zucchini: sow for seedlings from 18 March to 10 August; plant into a greenhouse from 8 April to 31 August; plant out into open ground from 29 April to 31 August. For plants and seeds, the places nearby include Tulsa Feed (farm supply, 10 km) and Southwood Landscape and Garden Center (plant nursery, 13 km); addresses and opening hours are below.

Zucchini in Tulsa: soil, season and weather

In Tulsa the soil, not frost, sets the date: the last frost is over around 6 March, but the top 7 cm of soil reaches 18 °C — the minimum on the zucchini card — only around 29 April, 54 days later.

Last spring frost	6 March
Top 7 cm of soil at 18 °C	29 April, 54 days after the last frost
First autumn frost	17 November, 202 days after the start
Days in the bed to the first harvest (card)	36
First harvest, if planted in this window	4 June – 6 October
Days left for picking	166
Daylight	12:50 on 8 April, 13:35 on 29 April
Watering outdoors when fruiting (card)	every 3 days; the driest month, November, has 7 rainy days

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

Zucchini in Tulsa: care after planting

Planted on 29 April: in the first weeks water every 4 days.

Pests and diseases of zucchini to watch for:

Weather in Tulsa during the zucchini season

About 907 mm of rain falls in the season; November is the driest month (73 mm) and May the wettest (164 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
April	21.9	10.7	155	11	13:06
May	26.1	16	164	14	14:04
June	31.8	21.5	108	9	14:36
July	33.6	23.6	98	10	14:24
August	32.6	22.8	108	10	13:34
September	29.9	19.7	94	7	12:27
October	23.4	13.1	107	8	11:19
November	16.4	6.6	73	7	10:16

ERA5 2016–2025, Open-Meteo

Zucchini in nearby cities

Around Tulsa, Lawton is 25 days earlier and Fayetteville 10 days later.

City	Distance	Date	Difference
Oklahoma City	157 km	15 April – 24 August	14 days earlier
Fayetteville	165 km	9 May – 24 August	10 days later
Joplin	168 km	5 May – 15 August	6 days later
Fort Smith	169 km	1 May – 1 September	2 days later
Wichita	209 km	2 May – 13 August	3 days later
Lawton	278 km	4 April – 25 August	25 days earlier

Where to buy zucchini plants and seeds near Tulsa

Buy plants ready to set out from 29 April to 31 August (from 8 April to 31 August for an unheated greenhouse); seed for raising your own is sown from 18 March to 10 August. Within 15 km of Tulsa OpenStreetMap lists 8 garden centres, 2 farm-supply shops, 1 plant nursery, 1 market and 1 farm shop (collected 20 October 2026).

Under the Sun Garden Center — garden centre
South Sheridan Road East 8998, 74133 Tulsa · 15 km
Southwood Landscape and Garden Center — plant nursery
South Lewis Avenue East 9025, 74137 Tulsa · 13 km
Tulsa Feed — farm supply
East 36th Street North 6255, 74115 Tulsa · 10 km
Smith Farm & Garden — farm supply
South Garnett Road East 5602, 74146 Tulsa · 15 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