Colorado · Garden vegetables

Lettuce season in Colorado

Typically mid-May to late September, with peak early June through mid-September.

Hatched chalk = early and late shoulders; solid = peak.

San Luis Valley and Front Range growers cut all summer at altitude.

At a glance

Early

From mid-May — first pickings, lighter supply, best prices come later.

Peak

early June through mid-September — full stalls, full flavor. This is the stretch to plan around.

Late

Through late September — quantity for preserving, and the stalls start dealing.

Season length

about 19 weeks end to end, shoulders included.

Lettuce

Look: Heads look dense for their size with perky, unblemished outer leaves and no browning at the cut end.
Feel: Leaves should feel crisp, not limp — butterheads give slightly while crispheads feel tight and heavy.
Smell: Fresh lettuce smells clean and mildly green; any sour or sulfurous whiff means it is breaking down.
Tip: Shop early in the morning — lettuce cut before the heat of the day stays crisp far longer.
Keeps: Refrigerate unwashed in a bag with a paper towel; most heads keep a week or more.

Chasing the season?

Lettuce peak moves across the map. After this window, it lands next in:

The whole national sweep · everything in season in Colorado

Frequently asked questions

When is lettuce season in Colorado?

In Colorado, the lettuce season typically runs mid-May to late September, with peak availability early June through mid-September. Exact weeks shift a little with each year's weather.

Can I pick my own lettuce in Colorado?

Rarely a u-pick crop — buy heads from market growers who cut them that morning. The best market weeks are early June through mid-September.

How long does lettuce season last in Colorado?

about 19 weeks end to end — mid-May to late September. The early and late shoulders are real but lighter; the solid stretch of chalk on the band is the sure bet.