§ When to plant · Wyoming · Checked Sept 2026
In Cheyenne, tender crops like tomatoes and peppers can go out around May 26, and frost has historically passed 9 years in 10 by June 7. Cool-season crops go in from February, and again from July for fall.
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§ 010 · Frost dates
Based on NOAA's 1991–2020 station records, with adjustments for tender crops.
| City · NOAA station | Last frost, on average | Plant tender crops from | Frost is over, 9 of 10 years by | Fall frost possible from |
|---|---|---|---|---|
| BuffaloBUFFALO · 2 km | May 24 | Jun 8June 8 | Jun 22 | Sep 7 |
| CasperCASPER WWTP · 3 km | May 10 | May 24May 24 | Jun 6 | Sep 14 |
| CheyenneCHEYENNE WFO · 2 km | May 14 | May 26May 26 | Jun 7 | Sep 17 |
| CodyCODY · 5 km | May 12 | May 27May 27 | Jun 11 | Sep 17 |
| DouglasDOUGLAS 1 SOUTHEAST · 3 km | May 19 | Jun 2June 2 | Jun 15 | Sep 10 |
| EvanstonEVANSTON BURNS FIELD · 6 km | Jun 3 | Jun 14June 14 | Jun 24 | Sep 11 |
| GilletteGILLETTE 4SE · 4 km | May 15 | May 29May 29 | Jun 12 | Sep 15 |
| Green RiverGREEN RVR · 0 km | May 24 | Jun 7June 7 | Jun 21 | Sep 7 |
| LanderLANDER HUNT FIELD AIRPORT · 3 km | May 18 | Jun 2June 2 | Jun 16 | Sep 13 |
| LaramieLARAMIE REGIONAL AIRPORT · 6 km | Jun 2 | Jun 18June 18 | Jul 4 | Sep 3 |
| MillsCASPER WWTP · 7 km | May 10 | May 24May 24 | Jun 6 | Sep 14 |
| NewcastleNEWCASTLE · 1 km | May 13 | May 26May 26 | Jun 7 | Sep 17 |
| PowellHEART MTN · 17 km | May 15 | Jun 1June 1 | Jun 17 | Sep 11 |
| RawlinsRAWLINS 1N · 2 km | May 17 | May 29May 29 | Jun 9 | Sep 22 |
| RivertonRIVERTON · 1 km | May 12 | May 27May 27 | Jun 10 | Sep 11 |
| Rock SpringsROCK SPRINGS FIRE DEPT · 2 km | May 24 | Jun 7June 7 | Jun 21 | Sep 9 |
| SheridanSHERIDAN COUNTY AIRPORT · 3 km | May 21 | Jun 5June 5 | Jun 19 | Sep 9 |
| TorringtonTORRINGTON MUNICIPAL AIRPORT · 2 km | May 11 | May 24May 24 | Jun 5 | Sep 16 |
| WheatlandWHEATLAND 4 N · 7 km | May 19 | Jun 4June 4 | Jun 20 | Sep 8 |
| WorlandWORLAND · 1 km | May 4 | May 17May 17 | May 29 | Sep 21 |
Wyoming's 20 largest cities (U.S. Census Bureau 2025 estimates), A to Z, each with its nearest NOAA station and the distance to it. Search any town to get its nearest station. "Plant tender crops from" is halfway between the average last frost and the date frost is over 9 years in 10; if frost is in the forecast after it, wait until it passes and nights stay above 36°F.
§ 020 · What to plant
Planting windows from Wyoming's Cooperative Extension Service. Filter by season or crop group; every view has its own link.
Link to this view getezina.com/when-to-plant/wyoming/
§ 030 · Crop by crop
Each crop has its own link, like #tomatoes. Tender crops wait for the frost dates above; succession crops are sown again every few weeks for a steady harvest.
Eruca vesicaria
Cool season
Laramie: plant May.
Ready in about 35 days.
Source: University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Asparagus officinalis
Perennial
Cheyenne: plant Apr, and again Apr–May; set out transplants Apr.
Casper: plant Apr, and again Apr–May.
Gillette: plant Apr, and again Apr–May.
Laramie: plant Apr, and again Apr–May.
Rock Springs: plant Apr, and again Apr–May.
Sheridan: plant Apr, and again Apr–May.
Big Horn Basin (Worland): plant Apr, and again Apr–May.
Source: Cheyenne Botanic Gardens (City of Cheyenne Recreation and Events Department), Cheyenne Planting Schedule (Garden Tips from the Cheyenne Botanic Gardens); University of Wyoming Extension, Growing Vegetables in Wyoming (Gardening: Vegetables in Wyoming); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Ocimum basilicum
Tender
Casper: start seed indoors Mar–Apr; sow May; set out transplants May.
Gillette: start seed indoors Apr–May; sow May–Jun; set out transplants May–Jun.
Rock Springs: start seed indoors Apr–May; sow Jun; set out transplants Jun.
Sheridan: start seed indoors Apr–May; sow May–Jun; set out transplants May–Jun.
Ready in about 60 days from seed, 35 from transplants. Tender: in spring, from about May 26 in Cheyenne. If frost is in the forecast, hold off until it passes and nights stay above 36°F.
Source: University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Beta vulgaris
Cool seasonSuccession sow
Cheyenne: sow May.
Laramie: plant May.
Big Horn Basin (Worland): sow May.
Ready in about 58 days; sow again every 6 weeks.
Source: Cheyenne Botanic Gardens (City of Cheyenne Recreation and Events Department), Cheyenne Planting Schedule (Garden Tips from the Cheyenne Botanic Gardens); University of Wyoming Extension, Washakie County (Worland), 2020 Planting Schedule - Worland Community Garden (WCG); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Brassica rapa
Cool seasonSuccession sow
Laramie: plant Jun.
Ready in about 50 days from seed, 40 from transplants; sow again every 4 weeks.
Source: University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Brassica oleracea
Cool season
Cheyenne: plant Apr–Jun.
Casper: start seed indoors Mar; set out transplants Apr.
Gillette: start seed indoors Mar–Apr; set out transplants Apr–May.
Laramie: start seed indoors Apr; set out transplants Jun.
Rock Springs: start seed indoors Mar–Apr; set out transplants May.
Sheridan: start seed indoors Mar–Apr; set out transplants Apr–May.
Big Horn Basin (Worland): start seed indoors Mar–Apr; set out transplants Apr–May.
Ready in about 95 days from seed, 65 from transplants.
Source: Cheyenne Botanic Gardens (City of Cheyenne Recreation and Events Department), Cheyenne Planting Schedule (Garden Tips from the Cheyenne Botanic Gardens); Laramie Local Foods and Laramie Garden Club (hosted by University of Wyoming Extension, Barnyards & Backyards), Vegetable Gardening for Beginning Gardeners of Laramie; University of Wyoming Extension, Washakie County (Worland), 2020 Planting Schedule - Worland Community Garden (WCG); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Brassica oleracea
Cool season
Cheyenne: plant Apr; set out transplants May.
Casper: set out transplants May.
Gillette: set out transplants May.
Laramie: set out transplants May.
Rock Springs: set out transplants May.
Sheridan: set out transplants May.
Big Horn Basin (Worland): set out transplants May.
Ready in about 130 days from seed, 100 from transplants.
Source: Cheyenne Botanic Gardens (City of Cheyenne Recreation and Events Department), Cheyenne Planting Schedule (Garden Tips from the Cheyenne Botanic Gardens); University of Wyoming Extension, Growing Vegetables in Wyoming (Gardening: Vegetables in Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Brassica oleracea
Cool season
Cheyenne: plant Apr.
Laramie: start seed indoors Apr; set out transplants Jun.
Big Horn Basin (Worland): start seed indoors Feb–Mar; set out transplants Mar–Apr.
Ready in about 110 days from seed, 80 from transplants.
Source: Cheyenne Botanic Gardens (City of Cheyenne Recreation and Events Department), Cheyenne Planting Schedule (Garden Tips from the Cheyenne Botanic Gardens); Laramie Local Foods and Laramie Garden Club (hosted by University of Wyoming Extension, Barnyards & Backyards), Vegetable Gardening for Beginning Gardeners of Laramie; University of Wyoming Extension, Washakie County (Worland), 2020 Planting Schedule - Worland Community Garden (WCG). Days to harvest: Ezina crop catalog, from state extension guides.
Cucumis melo
Tender
Casper: start seed indoors Apr–May; sow May.
Gillette: start seed indoors Apr–May; sow May–Jun.
Rock Springs: start seed indoors May; sow Jun.
Sheridan: start seed indoors Apr–May; sow May–Jun.
Big Horn Basin (Worland): start seed indoors Apr–May; set out transplants May.
Ready in about 80 days from seed, 70 from transplants. Tender: in spring, from about May 26 in Cheyenne. If frost is in the forecast, hold off until it passes and nights stay above 36°F.
Source: University of Wyoming Extension, Washakie County (Worland), 2020 Planting Schedule - Worland Community Garden (WCG); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Daucus carota
Cool seasonSuccession sow
Cheyenne: sow May.
Laramie: plant Jun.
Big Horn Basin (Worland): sow May.
Ready in about 70 days; sow again every 7 weeks.
Source: Cheyenne Botanic Gardens (City of Cheyenne Recreation and Events Department), Cheyenne Planting Schedule (Garden Tips from the Cheyenne Botanic Gardens); University of Wyoming Extension, Washakie County (Worland), 2020 Planting Schedule - Worland Community Garden (WCG); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Brassica oleracea
Cool season
Cheyenne: plant Apr–Jun; set out transplants Jun.
Casper: plant May; set out transplants Jun.
Gillette: plant May–Jun; set out transplants Jun.
Laramie: start seed indoors May; set out transplants Jun; plant Jul.
Rock Springs: plant May–Jun; set out transplants Jun.
Sheridan: plant May–Jun; set out transplants Jun.
Big Horn Basin (Worland): set out transplants Jun; plant Jul.
Ready in about 95 days from seed, 68 from transplants.
Source: Cheyenne Botanic Gardens (City of Cheyenne Recreation and Events Department), Cheyenne Planting Schedule (Garden Tips from the Cheyenne Botanic Gardens); Laramie Local Foods and Laramie Garden Club (hosted by University of Wyoming Extension, Barnyards & Backyards), Vegetable Gardening for Beginning Gardeners of Laramie; University of Wyoming Extension, Growing Vegetables in Wyoming (Gardening: Vegetables in Wyoming); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Brassica rapa
Cool season
Laramie: plant Jun.
Ready in about 75 days from seed, 60 from transplants.
Source: University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Cucumis sativus
TenderSuccession sow
Cheyenne: plant May.
Casper: sow May.
Gillette: sow May–Jun.
Rock Springs: sow Jun.
Sheridan: sow May–Jun.
Big Horn Basin (Worland): start seed indoors Apr–May; set out transplants May.
Ready in about 58 days from seed, 50 from transplants; sow again every 7 weeks. Tender: in spring, from about May 26 in Cheyenne. If frost is in the forecast, hold off until it passes and nights stay above 36°F.
Source: Cheyenne Botanic Gardens (City of Cheyenne Recreation and Events Department), Cheyenne Planting Schedule (Garden Tips from the Cheyenne Botanic Gardens); University of Wyoming Extension, Washakie County (Worland), 2020 Planting Schedule - Worland Community Garden (WCG); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Anethum graveolens
Cool seasonSuccession sow
Casper: sow May.
Gillette: sow May–Jun.
Rock Springs: sow May–Jun.
Sheridan: sow May–Jun.
Ready in about 50 days; sow again every 5 weeks.
Source: University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Solanum melongena
Tender
Cheyenne: set out transplants May.
Big Horn Basin (Worland): start seed indoors Mar–Apr; set out transplants Jun.
Ready in about 75 days from transplants. Tender: in spring, from about May 26 in Cheyenne. If frost is in the forecast, hold off until it passes and nights stay above 36°F.
Source: Cheyenne Botanic Gardens (City of Cheyenne Recreation and Events Department), Cheyenne Planting Schedule (Garden Tips from the Cheyenne Botanic Gardens); University of Wyoming Extension, Washakie County (Worland), 2020 Planting Schedule - Worland Community Garden (WCG). Days to harvest: Ezina crop catalog, from state extension guides.
Cichorium endivia
Cool seasonSuccession sow
Laramie: plant May; set out transplants May.
Ready in about 90 days from seed, 70 from transplants; sow again every 8 weeks.
Source: University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Allium sativum
Cool seasonOverwinters
Cheyenne: plant Sep–Oct.
Casper: plant Sep–Oct.
Gillette: plant Sep–Oct.
Laramie: plant Sep–Oct.
Rock Springs: plant Sep–Oct.
Sheridan: plant Sep–Oct.
Big Horn Basin (Worland): plant Sep–Oct.
Ready in about 240 days.
Source: University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Phaseolus vulgaris
TenderSuccession sow
Cheyenne: sow May, and again May–Jun.
Laramie: plant Jun.
Big Horn Basin (Worland): sow May.
Ready in about 65 days; sow again every 5 weeks. Tender: in spring, from about May 26 in Cheyenne. If frost is in the forecast, hold off until it passes and nights stay above 36°F.
Source: Cheyenne Botanic Gardens (City of Cheyenne Recreation and Events Department), Cheyenne Planting Schedule (Garden Tips from the Cheyenne Botanic Gardens); University of Wyoming Extension, Washakie County (Worland), 2020 Planting Schedule - Worland Community Garden (WCG); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Brassica oleracea
Cool season
Casper: start seed indoors Mar; set out transplants Apr.
Gillette: start seed indoors Mar–Apr; set out transplants Apr.
Laramie: plant May; set out transplants May.
Rock Springs: start seed indoors Apr; set out transplants Apr–May.
Sheridan: start seed indoors Mar–Apr; set out transplants Apr.
Big Horn Basin (Worland): start seed indoors Mar; set out transplants Apr.
Ready in about 60 days from seed, 45 from transplants.
Source: University of Wyoming Extension, Washakie County (Worland), 2020 Planting Schedule - Worland Community Garden (WCG); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Brassica oleracea
Cool season
Cheyenne: plant Apr–Jun.
Casper: start seed indoors Mar; set out transplants Apr.
Gillette: start seed indoors Apr; set out transplants May.
Laramie: plant May; set out transplants May.
Rock Springs: start seed indoors Apr; set out transplants May.
Sheridan: start seed indoors Apr; set out transplants May.
Ready in about 55 days from seed, 45 from transplants.
Source: Cheyenne Botanic Gardens (City of Cheyenne Recreation and Events Department), Cheyenne Planting Schedule (Garden Tips from the Cheyenne Botanic Gardens); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Lactuca sativa
Cool seasonSuccession sow
Laramie: plant May.
Big Horn Basin (Worland): start seed indoors Mar; set out transplants May.
Ready in about 65 days from seed, 50 from transplants; sow again every 6 weeks.
Source: University of Wyoming Extension, Washakie County (Worland), 2020 Planting Schedule - Worland Community Garden (WCG); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Brassica juncea
Cool season
Cheyenne: plant May.
Laramie: plant Jun.
Ready in about 45 days.
Source: Cheyenne Botanic Gardens (City of Cheyenne Recreation and Events Department), Cheyenne Planting Schedule (Garden Tips from the Cheyenne Botanic Gardens); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Allium cepa
Cool season
Cheyenne: plant Apr.
Casper: start seed indoors Feb–Mar; set out transplants Apr–May.
Gillette: start seed indoors Feb–Mar; set out transplants May.
Laramie: plant Jun.
Rock Springs: start seed indoors Feb–Mar; set out transplants May.
Sheridan: start seed indoors Feb–Mar; set out transplants May.
Ready in about 110 days from seed, 95 from transplants.
Source: Cheyenne Botanic Gardens (City of Cheyenne Recreation and Events Department), Cheyenne Planting Schedule (Garden Tips from the Cheyenne Botanic Gardens); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Petroselinum crispum
Cool season
Casper: sow May; set out transplants May.
Gillette: sow May–Jun; set out transplants May–Jun.
Rock Springs: sow May–Jun; set out transplants May–Jun.
Sheridan: sow May–Jun; set out transplants May–Jun.
Ready in about 78 days from seed, 50 from transplants.
Source: University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Pastinaca sativa
Cool season
Cheyenne: sow May.
Casper: sow Apr.
Gillette: sow May.
Rock Springs: sow May.
Sheridan: sow May.
Ready in about 120 days.
Source: Cheyenne Botanic Gardens (City of Cheyenne Recreation and Events Department), Cheyenne Planting Schedule (Garden Tips from the Cheyenne Botanic Gardens); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Pisum sativum
Cool seasonSuccession sow
Cheyenne: sow Apr–Jun; plant Jul.
Casper: sow Jul; plant Jul.
Gillette: sow Jul; plant Jul.
Laramie: plant May; sow Jul.
Rock Springs: sow Jul; plant Jul.
Sheridan: sow Jul; plant Jul.
Big Horn Basin (Worland): start seed indoors Feb–Mar; set out transplants Mar; sow Jul; plant Jul.
Ready in about 65 days; sow again every 5 weeks.
Source: Cheyenne Botanic Gardens (City of Cheyenne Recreation and Events Department), Cheyenne Planting Schedule (Garden Tips from the Cheyenne Botanic Gardens); University of Wyoming Extension, Growing Vegetables in Wyoming (Gardening: Vegetables in Wyoming); University of Wyoming Extension, Washakie County (Worland), 2020 Planting Schedule - Worland Community Garden (WCG); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Capsicum annuum
Tender
Cheyenne: set out transplants May.
Casper: set out transplants May.
Gillette: set out transplants May–Jun.
Rock Springs: set out transplants Jun.
Sheridan: set out transplants May–Jun.
Big Horn Basin (Worland): start seed indoors Apr; set out transplants May.
Ready in about 70 days from transplants. Tender: in spring, from about May 26 in Cheyenne. If frost is in the forecast, hold off until it passes and nights stay above 36°F.
Source: Cheyenne Botanic Gardens (City of Cheyenne Recreation and Events Department), Cheyenne Planting Schedule (Garden Tips from the Cheyenne Botanic Gardens); University of Wyoming Extension, Washakie County (Worland), 2020 Planting Schedule - Worland Community Garden (WCG); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Solanum tuberosum
Cool season
Cheyenne: plant Apr.
Casper: plant May.
Gillette: plant May.
Laramie: plant Jun.
Rock Springs: plant May.
Sheridan: plant May.
Big Horn Basin (Worland): plant Apr.
Ready in about 100 days.
Source: Cheyenne Botanic Gardens (City of Cheyenne Recreation and Events Department), Cheyenne Planting Schedule (Garden Tips from the Cheyenne Botanic Gardens); University of Wyoming Extension, Growing Vegetables in Wyoming (Gardening: Vegetables in Wyoming); University of Wyoming Extension, Washakie County (Worland), 2020 Planting Schedule - Worland Community Garden (WCG); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Raphanus sativus
Cool seasonSuccession sow
Cheyenne: sow May, and again Aug.
Laramie: plant May.
Big Horn Basin (Worland): sow Mar–Apr.
Ready in about 28 days; sow again every 3 weeks.
Source: Cheyenne Botanic Gardens (City of Cheyenne Recreation and Events Department), Cheyenne Planting Schedule (Garden Tips from the Cheyenne Botanic Gardens); University of Wyoming Extension, Washakie County (Worland), 2020 Planting Schedule - Worland Community Garden (WCG); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Rheum rhabarbarum
Perennial
Cheyenne: set out transplants Apr.
Source: Cheyenne Botanic Gardens (City of Cheyenne Recreation and Events Department), Cheyenne Planting Schedule (Garden Tips from the Cheyenne Botanic Gardens). Days to harvest: Ezina crop catalog, from state extension guides.
Salvia officinalis
Perennial
Casper: sow May.
Gillette: sow May–Jun.
Rock Springs: sow May–Jun.
Sheridan: sow May–Jun.
Source: University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Spinacia oleracea
Cool seasonSuccession sow
Cheyenne: plant Apr, and again Aug; sow May, and again Jul.
Casper: sow Apr; plant Oct–Nov.
Gillette: sow Apr–May; plant Oct–Nov.
Laramie: sow May, and again Jul; plant May.
Rock Springs: sow May; plant Oct–Nov.
Sheridan: sow Apr–May; plant Oct–Nov.
Big Horn Basin (Worland): start seed indoors Mar; set out transplants Apr; sow May, and again Jul; plant Oct–Nov.
Ready in about 42 days; sow again every 5 weeks.
Source: Cheyenne Botanic Gardens (City of Cheyenne Recreation and Events Department), Cheyenne Planting Schedule (Garden Tips from the Cheyenne Botanic Gardens); University of Wyoming Extension, Growing Vegetables in Wyoming (Gardening: Vegetables in Wyoming); University of Wyoming Extension, Washakie County (Worland), 2020 Planting Schedule - Worland Community Garden (WCG); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Cucurbita pepo
TenderSuccession sow
Casper: sow May.
Gillette: sow May–Jun.
Laramie: start seed indoors May; set out transplants Jun.
Rock Springs: sow Jun.
Sheridan: sow May–Jun.
Big Horn Basin (Worland): start seed indoors Apr–May; set out transplants May.
Ready in about 50 days from seed, 40 from transplants; sow again every 7 weeks. Tender: in spring, from about May 26 in Cheyenne. If frost is in the forecast, hold off until it passes and nights stay above 36°F.
Source: Laramie Local Foods and Laramie Garden Club (hosted by University of Wyoming Extension, Barnyards & Backyards), Vegetable Gardening for Beginning Gardeners of Laramie; University of Wyoming Extension, Washakie County (Worland), 2020 Planting Schedule - Worland Community Garden (WCG); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Zea mays
TenderSuccession sow
Cheyenne: plant May.
Casper: plant May.
Gillette: plant May.
Rock Springs: plant May–Jun.
Sheridan: plant May.
Big Horn Basin (Worland): sow May.
Ready in about 78 days; sow again every 6 weeks. Tender: in spring, from about May 26 in Cheyenne. If frost is in the forecast, hold off until it passes and nights stay above 36°F.
Source: Cheyenne Botanic Gardens (City of Cheyenne Recreation and Events Department), Cheyenne Planting Schedule (Garden Tips from the Cheyenne Botanic Gardens); University of Wyoming Extension, Washakie County (Worland), 2020 Planting Schedule - Worland Community Garden (WCG); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Beta vulgaris
Cool season
Cheyenne: plant May.
Casper: sow Apr.
Gillette: sow May.
Laramie: plant Jun.
Rock Springs: sow May.
Sheridan: sow May.
Big Horn Basin (Worland): start seed indoors Apr; set out transplants May.
Ready in about 55 days from seed, 40 from transplants.
Source: Cheyenne Botanic Gardens (City of Cheyenne Recreation and Events Department), Cheyenne Planting Schedule (Garden Tips from the Cheyenne Botanic Gardens); University of Wyoming Extension, Washakie County (Worland), 2020 Planting Schedule - Worland Community Garden (WCG); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Solanum lycopersicum
Tender
Cheyenne: set out transplants May.
Casper: start seed indoors Apr; set out transplants May.
Gillette: start seed indoors Apr–May; set out transplants May–Jun.
Laramie: start seed indoors Apr; set out transplants Jun.
Rock Springs: start seed indoors Apr–May; set out transplants Jun.
Sheridan: start seed indoors Apr–May; set out transplants May–Jun.
Big Horn Basin (Worland): start seed indoors Apr; set out transplants May.
Ready in about 75 days from transplants. Tender: in spring, from about May 26 in Cheyenne. If frost is in the forecast, hold off until it passes and nights stay above 36°F.
Source: Cheyenne Botanic Gardens (City of Cheyenne Recreation and Events Department), Cheyenne Planting Schedule (Garden Tips from the Cheyenne Botanic Gardens); Laramie Local Foods and Laramie Garden Club (hosted by University of Wyoming Extension, Barnyards & Backyards), Vegetable Gardening for Beginning Gardeners of Laramie; University of Wyoming Extension, Washakie County (Worland), 2020 Planting Schedule - Worland Community Garden (WCG); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Brassica rapa
Cool seasonSuccession sow
Laramie: plant May.
Ready in about 50 days; sow again every 5 weeks.
Source: University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Citrullus lanatus
Tender
Casper: start seed indoors Apr–May; sow May; set out transplants May.
Gillette: sow May–Jun; start seed indoors May; set out transplants May–Jun.
Rock Springs: start seed indoors May; sow Jun; set out transplants Jun.
Sheridan: sow May–Jun; start seed indoors May; set out transplants May–Jun.
Big Horn Basin (Worland): start seed indoors Apr–May; set out transplants May.
Ready in about 85 days from seed, 75 from transplants. Tender: in spring, from about May 26 in Cheyenne. If frost is in the forecast, hold off until it passes and nights stay above 36°F.
Source: University of Wyoming Extension, Washakie County (Worland), 2020 Planting Schedule - Worland Community Garden (WCG); University of Wyoming Extension, Wyoming Vegetable & Fruit Growing Guide (Fruit and Vegetable Production Guide for Wyoming). Days to harvest: Ezina crop catalog, from state extension guides.
Cucurbita moschata
Tender
Big Horn Basin (Worland): start seed indoors Apr–May; set out transplants May.
Ready in about 95 days from seed, 80 from transplants. Tender: in spring, from about May 26 in Cheyenne. If frost is in the forecast, hold off until it passes and nights stay above 36°F.
Source: University of Wyoming Extension, Washakie County (Worland), 2020 Planting Schedule - Worland Community Garden (WCG). Days to harvest: Ezina crop catalog, from state extension guides.
§ 040 · Questions
On average from about May 4 in Worland to June 3 in Evanston. Frost is over 9 years in 10 by May 29 to July 4.
The extension service lists April to June. Tomatoes are frost-tender, so Ezina dates them from about May 26 in Cheyenne. If frost is in the forecast, wait until it passes.
The extension calendar lists garlic, spinach for October.
The latest fall windows on the calendar close in November. Filter by Fall above to see what is still open.
A zone is the coldest winter night, not a frost date. These dates come from NOAA station records and the extension service.
Yes. Run Ezina Dig on your address and your bed plans are dated from that site's own frost records, on iPhone and Android in the contiguous U.S.