In Colorado, the spinach season typically runs early May to late June, and again mid-August to mid-October, with peak availability mid-May through mid-June. Exact weeks shift a little with each year's weather.
Can I pick my own spinach in Colorado?
Rarely offered u-pick; buy same-day cut bunches at spring and fall market stalls. The best market weeks are mid-May through mid-June.
How long does spinach season last in Colorado?
about 17 weeks end to end — early May to late June, and again mid-August to mid-October. The early and late shoulders are real but lighter; the solid stretch of chalk on the band is the sure bet.