Wyoming Planting Calendar: When to Sow and Plant, Frost Dates Included
Wyoming’s frost dates run from May at the earliest to October, giving Cheyenne roughly four months to grow warm-season crops like tomatoes and peppers.
Gardening in Wyoming
Everything we have worked out for Wyoming: what to plant and when, which varieties finish in time, the pests that actually turn up here, and the jobs that pay off month by month. We also cover the rest of the property, from lawns and soil to home care and energy, because a garden rarely stops at the vegetable bed.
The numbers first, because everything else follows from them. Measured at the weather station in Cheyenne, the last spring freeze runs May 7 to May 18 and the first fall freeze runs September 24 to October 5, USDA zones 3a-6a, 2,552 growing degree days in the year.
Garlic does well: 30.4 weeks below 40 °F, comfortably past the six it needs to form a proper head.
Elsewhere on the property in Wyoming: the pests that turn up here.
Figures from NOAA's 1991-2020 climate normals. A state is not one climate: elevation, a large lake or the coast can move these dates by two weeks either way, so check your own county with the extension service before you spend money.
Growing Onions in Wyoming: Which Varieties Actually Bulb
At 41.15 degrees north, the reference location for this page gets 14 hours and 58 minutes of daylight on the longest day of the year.
Flowers That Actually Thrive in Wyoming, and the Ones That Struggle
Wyoming flowers need cold hardiness first, drought tolerance second, and a plant tag zone number the reader actually checks against elevation.
Planting Spring Bulbs in Wyoming: What Will Come Back, and What Will Not
Yes, spring bulbs come back reliably in most of Wyoming — the state’s winters run so cold that chill requirements are never the problem.
Heating a Home in Wyoming: What the Winter Actually Costs
Wyoming’s winters don’t just get cold, they stay cold for a long stretch, and that’s the detail that actually shapes a heating bill or a woodpile.
The Wyoming Apple Calendar, Stage by Stage
Wyoming’s apple stages, from dormancy to harvest, timed against Cheyenne’s NOAA frost window, with the cultivars and site factors that decide the outcome.
When to Carve a Pumpkin in Wyoming
Wyoming’s mean first fall frost lands around September 24 to October 5, weeks before Halloween arrives on October 31.
Growing Apples in Wyoming: Varieties, Timing and Frost Risk
Wyoming spans USDA zones 3a to 6a, and Cheyenne’s climate data shows which cold-hardy apple varieties, pollination pairs, and frost timing actually work here.
Gardening in Wyoming: What the Season Actually Allows
Ask what a Wyoming garden can actually pull off, and the answer starts with three numbers: a hardiness zone that spans 3a to 6a, a last spring frost that…
Cabbage worms in Wyoming: When It Shows Up and What Stops It
Cabbage worms show up in Wyoming gardens once transplants have had two to three weeks in warm soil, not on a fixed calendar day.