When to plant bell peppers in Fort Collins: 7 June – 1 July

In Fort Collins, bell pepper: sow for seedlings from 18 March to 2 May; plant into a greenhouse from 17 May to 1 July; plant out into open ground from 7 June to 1 July. For plants and seeds, the places nearby include Poudre Pet & Feed Supply (farm supply, 5 km) and Poudre Pet & Feed Supply (farm supply, 6 km); addresses and opening hours are below.

Bell Pepper in Fort Collins: soil, season and weather

In Fort Collins the soil, not frost, sets the date: the last frost is over around 25 April, but the top 7 cm of soil reaches 18 °C — the minimum on the bell pepper card — only around 7 June, 43 days later.

Last spring frost	25 April
Top 7 cm of soil at 18 °C	7 June, 43 days after the last frost
Into an unheated greenhouse	17 May – 1 July; May outside: 6.4 °C at night, 21.1 °C by day; card 15–30 °C
First autumn frost	21 October, 136 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	16 August – 9 September
Days left for picking	66
Daylight	12:58 on 8 April, 14:58 on 7 June
Watering outdoors when fruiting (card)	every 4 days; the driest month, October, has 4 rainy days

The same dates in Fort Collins hold for Cucumber, Eggplant, Zucchini, Pumpkin and Watermelon.

Bell Pepper in Fort Collins: care after planting

Planted on 7 June: in the first weeks water every 5 days.

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

7 June — feed: balanced (NPK)
5 July — feed: nitrogen

Pests and diseases of bell pepper 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 Fort Collins during the bell pepper season

Days average above the bell pepper card's 15–30 °C in July (31.6 °C) and August (30.5 °C). Nights average below 15 °C in June (12.7 °C), September (11.2 °C) and October (3.8 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	28.4	12.7	40	8	15:03
July	31.6	16.2	37	7	14:48
August	30.5	15.2	34	7	13:49
September	27.7	11.2	22	4	12:30
October	18.8	3.8	20	4	11:11

ERA5 2016–2025, Open-Meteo

Bell Pepper in nearby cities

Around Fort Collins, Pueblo is 35 days earlier and Cheyenne 1 day later.

City	Distance	Date	Difference
Cheyenne	69 km	8 June – 23 June	1 day later
Denver	90 km	28 May – 25 June	10 days earlier
Colorado Springs	192 km	6 June – 25 June	1 day earlier
Pueblo	258 km	3 May – 8 July	35 days earlier
Grand Junction	340 km	6 May – 7 July	32 days earlier
Rapid City	420 km	6 June – 22 June	1 day earlier

Where to buy bell pepper plants and seeds near Fort Collins

Buy plants ready to set out from 7 June to 1 July (from 17 May to 1 July for an unheated greenhouse); seed for raising your own is sown from 18 March to 2 May. Within 15 km of Fort Collins OpenStreetMap lists 10 garden centres, 4 farm-supply shops, 2 plant nurseries, 3 markets and 6 farm shops (collected 28 October 2026).

Poudre Pet & Feed Supply — farm supply
South College Avenue 6204, 80525 Fort Collins · Mon–Fri 07:30–19:00; Sat 07:30–17:00; Sun 10:00–17:00 · 6 km · naturalfeedstore.com
JAX Fort Collins Farm & Ranch — farm supply
North US Highway 287 1000, 80524-1383 Fort Collins · Mon–Fri 07:30–19:30; Sat 07:30–18:00; Sun 08:30–18:00 · 9 km · jaxmercantile.com
Bomgaars — farm supply
Draft Horse Drive 3720, 80538-9005 Loveland · Mon–Fri 08:00–20:00; Sat 08:00–18:00; Sun 09:00–17:00 · 15 km · bomgaars.com
Poudre Pet & Feed Supply — farm supply
North College Avenue 622 · 5 km · poudrefeed.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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