Colorado · zones 5a–7a
When to plant strawberries in Colorado.
Sow or transplant between Apr 25 to May 30 in a typical year, keyed to Colorado's median last frost around May 9. A second, fall sowing fits Jul 31 to Aug 30. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Strawberries dates for a typical Colorado season.
1 · Start indoors
Mar 14 to Apr 18
About 6 weeks before set-out. Warm spot, real light.
2 · Set out
Apr 25 to May 30
Keyed to the ~May 9 last frost. Sow 0" deep, 12" apart.
Fall round
Jul 31 to Aug 30
Counted back from the ~Sep 29 first frost.
Harvest
~90 days later
~1.5 lb per plant over ~8 weeks.
Colorado spans more than one climate: Zone 6 is the most common zone, but the state runs 5a to 7a. That's why the planner works from your ZIP code's frost dates, not your zone: mountain and coastal gardens in the same state can be three weeks apart.
Colorado growing notes
Day-neutral strawberries dodge Colorado's one deadly weather event. Almost.
Why day-neutral wins over June bearers here
Colorado's short-season, cool-night climate rewards day-neutral strawberries like Albion and Seascape, which set fruit continuously from June through the first hard fall frost instead of dumping one heavy June crop and quitting. At altitude, the plants also dodge the heat stall that shuts down day-neutrals in hotter states: production typically only slows once days push past 85 degrees, and much of Colorado's growing season sits comfortably below that mark even in August.
Plant so the bud sits exactly flush with the surface, never sunk below it, a foot between plants down the row; buried crowns rot, and exposed roots dry out fast in this climate's low humidity. Strip the flowers off through roughly the plant's first month and a half in the ground, so its energy banks into crown and root rather than a handful of early, undersized berries, then let it fruit freely after that window closes.
Hail is the strawberry killer here, not frost
A ripe strawberry has no defense against Colorado hail, and this state sees more hail days each summer than almost anywhere else in the country, concentrated from May through August, the exact months the crop is fruiting. A single 15-minute storm can pit and split every berry on the plant and bruise the crowns underneath badly enough to cut next month's yield too.
Netting rated for hail, not the flimsy bird mesh sold at most garden centers, is worth the cost for a serious bed; drape it over hoops so it can flex instead of pinning stones directly onto the foliage. Watching the sky matters as much as the netting: afternoon storms build fast here, and a bed covered by 2 p.m. on a day with a severe thunderstorm watch avoids most of the damage.
Sun exposure and the drip-line math
Intense high-altitude sun scalds exposed berry shoulders into a pale, leathery patch, especially on fruit ripening outside the leaf canopy during a heat spike; thinning leaves aggressively is the wrong move here, since a fuller canopy shades the fruit that matters most. A little extra leaf cover costs nothing in flavor and saves berries that would otherwise be culled at the bench.
Because dry air pulls water out of both soil and plant fast, day-neutral strawberries in Colorado want closer to 2 inches of water a week during fruiting, delivered through drip line rather than overhead sprinklers, which lose a meaningful share to evaporation before it ever reaches the roots. Mulch 2 inches of straw around the crowns to slow that loss further and keep ripening berries off bare, heat-radiating soil.
In Colorado: watch for
The pests that find strawberries here.
The short season here, about 143 frost-free days, keeps strawberry, day-neutral in front of spotted wing drosophila only briefly. One early row cover usually carries a planting through the worst of it.
Soft, quickly-rotting ripe berries with tiny larvae inside.
Organic fix: Pick often, chill fast, hang traps, exclude with fine netting.
Metallic beetles skeletonizing the leaves in summer.
Organic fix: Handpick into soapy water; neem.
White powder on leaves, or fuzzy gray rot on the fruit.
Organic fix: Prune for airflow, water at the base, spray neem.
Your season math: Colorado gives strawberries about 143 frost-free days, and it needs roughly 90 days to a first harvest. It's a one-planting crop, so time that single sowing well.
Planting strawberries in Colorado: questions
When should I plant strawberries in Colorado?+
In a typical Colorado year, sow strawberries or set out transplants between Apr 25 to May 30, keyed to the state's median last frost around May 9. There's also a fall window: Jul 31 to Aug 30. Your exact dates shift with your ZIP code and microclimate.
When do I start strawberries seeds indoors in Colorado?+
Start seeds inside about 6 weeks before set-out: roughly Mar 14 to Apr 18 for a typical Colorado season.
What USDA zone is Colorado?+
Colorado spans zones 5a–7a, mostly zone 6. But frost dates, not zones, set planting time. The free planner uses your ZIP code's actual frost dates.
How many strawberries plants do I need?+
Depends who you're feeding. The crop page has exact counts per household size, or the free planner does the math for your family in about 60 seconds.