When to plant zucchini in Colorado Springs: 6 June – 29 July

In Colorado Springs, zucchini: sow for seedlings from 25 April to 8 July; plant into a greenhouse from 16 May to 29 July; plant out into open ground from 6 June to 29 July.

Zucchini in Colorado Springs: soil, season and weather

In Colorado Springs the soil, not frost, sets the date: the last frost is over around 3 May, but the top 7 cm of soil reaches 18 °C — the minimum on the zucchini card — only around 6 June, 34 days later.

Last spring frost	3 May
Top 7 cm of soil at 18 °C	6 June, 34 days after the last frost
First autumn frost	15 October, 131 days after the start
Days in the bed to the first harvest (card)	36
First harvest, if planted in this window	12 July – 3 September
Days left for picking	95
Daylight	14:18 on 16 May, 14:47 on 6 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, October, has 4 rainy days

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

Zucchini in Colorado Springs: care after planting

Planted on 6 June: in the first weeks water every 4 days.

Pests and diseases of zucchini to watch for:

Weather in Colorado Springs during the zucchini season

About 178 mm of rain falls in the season; October is the driest month (20 mm) and July the wettest (56 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	28.8	12.3	40	7	14:52
July	30.8	15.1	56	9	14:38
August	29.5	14.3	37	7	13:43
September	27	10.9	25	4	12:29
October	19.3	3.5	20	4	11:14

ERA5 2016–2025, Open-Meteo

Zucchini in nearby cities

Around Colorado Springs, Pueblo is 34 days earlier and Cheyenne 2 days later.

City	Distance	Date	Difference
Pueblo	66 km	3 May – 11 August	34 days earlier
Denver	102 km	28 May – 29 July	9 days earlier
Fort Collins	192 km	7 June – 4 August	1 day later
Cheyenne	257 km	8 June – 27 July	2 days later
Grand Junction	326 km	6 May – 10 August	31 days earlier
Santa Fe (United States)	363 km	3 May – 9 August	34 days earlier

Where to buy zucchini plants and seeds near Colorado Springs

Buy plants ready to set out from 6 June to 29 July (from 16 May to 29 July for an unheated greenhouse); seed for raising your own is sown from 25 April to 8 July. Within 15 km of Colorado Springs OpenStreetMap lists 16 garden centres, 2 farm-supply shops, 1 plant nursery, 2 markets and 1 farm shop (collected 20 October 2026).

Free Mulch Pile — garden centre
3 km
Colorado Cultivations — garden centre
8 km
Walmart Garden Center — garden centre
12 km
Walmart Garden Center — garden centre
14 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