Where it's in season
September
Peak nowComing into seasonEnding soonAvailable longerOut of season
Faintly-shaded regions don't have seasonality data for this item yet.
Sources & confidence
A seasonal guide, not a live inventory — see each region's source below. "Verified" means confirmed by a real Grano producer, market, or authoritative local source; other levels are regional or general agricultural knowledge.
Great Lakes · Regional estimate · General Midwest horticultural/extension consensus (multiple university extension programs agree on these approximate windows; not independently verified against one named document this session)
Grano Network
5 producers · 0 open restaurant requests
EP
Eden Place Farms
Lettuce, Collard Greens & Spinach · Chicago, IL
Documented by Grano

Global Gardens Chicago
Lettuce, Kale & Swiss Chard · Chicago, IL
Documented by Grano

Kenter Canyon Farms
Specialty Lettuces & Salad Mixes · Fillmore, CA
Documented by Grano

Urban Growers Collective
Lettuce, Spinach, Collard Greens & Kale · Chicago, IL
Documented by Grano

Lone Duck Farm
Salad Greens & Lettuce · Milwaukee, WI
Documented by Grano