Las cuatro fechas que importan
| Fecha | Cuándo | Qué significa |
|---|---|---|
| Última helada de primavera (50 %) | May 26 | La mitad de los años hiela después de esta fecha. Es una media, no una garantía. |
| Última helada de primavera (10 %) | Jun 10 | Solo un año de cada diez hiela después de esta fecha. Úsala para lo que no puedas permitirte replantar. |
| Primera helada de otoño (50 %) | Sep 22 | La mitad de los años hiela antes de esta fecha. Los cultivos de otoño se cuentan hacia atrás desde aquí. |
| Primera helada de otoño (10 %) | Sep 5 | Un año de helada temprana. Si un cultivo tiene que terminar, apunta a cosechar antes de esta fecha. |
Siembra de primavera y verano en Casper
Las fechas se calculan con la última helada de este lugar, no con una tabla genérica por zona. Los «mejores días lunares» son los días de cada ventana que caen en la fase tradicional del cultivo, la misma regla que usa la app.
| Cultivo | Sembrar dentro | Plantar fuera | Mejores días lunares | Días hasta la cosecha |
|---|---|---|---|---|
| Strawberry (crowns) transplant |
— | Mar 27 – May 5 | Apr 1, May 1 Full Moon |
perennial — first real harvest next season |
| Garlic cloves/sets Mejor sembrarlo en otoño: mira abajo |
— | Apr 9 – May 10 | May 2–7 Waning Gibbous |
240–300 |
| Asparagus (crowns) transplant |
— | Apr 14 – May 19 | Apr 23 First Quarter |
perennial — first real harvest 2–3 years |
| Chives either |
Mar 31 | Apr 14 – May 19 | Apr 18–22, May 17 Waxing Crescent |
75–90 |
| Onion (from sets/transplants) cloves/sets |
— | Apr 14 – May 19 | May 2–7 Waning Gibbous |
90–120 |
| Peas (English/snap) direct sow |
— | Apr 14 – May 19 | Apr 23 First Quarter |
55–75 |
| Spinach direct sow |
— | Apr 14 – May 19 | Apr 18–22, May 17 Waxing Crescent |
35–50 |
| Cabbage transplant |
Mar 24 | Apr 21 – May 19 | Apr 21–22, May 17–19 Waxing Crescent |
65–90 |
| Collards either |
Apr 14 | Apr 21 – Jun 9 | Apr 21–22, May 17–20 Waxing Crescent |
55–85 |
| Kale either |
Apr 14 | Apr 21 – May 26 | Apr 21–22, May 17–20 Waxing Crescent |
50–65 |
| Lettuce (leaf) either |
Apr 21 | Apr 21 – Jun 16 | Apr 21–22, May 17–20 Waxing Crescent |
40–55 |
| Potato cloves/sets |
— | Apr 21 – May 26 | May 1 Full Moon |
70–120 |
| Radish direct sow |
— | Apr 21 – Jun 16 | May 2–7 Waning Gibbous |
22–35 |
| Turnip direct sow |
— | Apr 21 – Jun 2 | May 2–7 Waning Gibbous |
40–60 |
| Broccoli transplant |
Mar 24 | Apr 26 – May 26 | May 17–22 Waxing Crescent |
55–80 |
| Brussels Sprouts transplant |
Mar 24 | Apr 26 – May 26 | May 17–22 Waxing Crescent |
90–110 |
| Leek transplant |
Mar 17 | Apr 26 – May 26 | May 2–7 Waning Gibbous |
100–120 |
| Lettuce (head) transplant |
Apr 7 | Apr 26 – May 26 | May 17–22 Waxing Crescent |
60–85 |
| Parsley either |
Mar 24 | Apr 26 – Jun 2 | May 17–22 Waxing Crescent |
70–90 |
| Parsnip direct sow |
— | Apr 26 – Jun 2 | May 1, May 31 Full Moon |
100–150 |
| Shallot cloves/sets Mejor sembrarlo en otoño: mira abajo |
— | Apr 26 – May 26 | May 2–7 Waning Gibbous |
90–120 |
| Beet direct sow |
— | Apr 28 – Jun 16 | May 1, May 31 Full Moon |
50–65 |
| Kohlrabi either |
Apr 14 | Apr 28 – Jun 2 | May 17–22 Waxing Crescent |
45–60 |
| Carrot direct sow |
— | May 5 – Jun 16 | May 31 Full Moon |
65–85 |
| Cauliflower transplant |
Mar 24 | May 5 – May 26 | May 17–22 Waxing Crescent |
55–80 |
| Cilantro direct sow |
— | May 5 – Jun 16 | May 17–22 Waxing Crescent |
45–70 |
| Swiss Chard direct sow |
— | May 5 – Jun 25 | May 17–22 Waxing Crescent |
50–60 |
| Dill direct sow |
— | May 12 – Jun 25 | May 17–22 Waxing Crescent |
40–60 |
| Cucumber either |
May 5 | May 26 – Jun 25 | Jun 21 First Quarter |
50–70 |
| Green Beans (bush) direct sow |
— | May 26 – Jul 10 | Jun 21 First Quarter |
50–65 |
| Oregano transplant |
Mar 31 | May 26 – Jun 16 | — First Quarter |
cut as needed |
| Sage transplant |
Mar 31 | May 26 – Jun 16 | — First Quarter |
cut as needed |
| Sweet Corn direct sow |
— | May 26 – Jul 10 | Jun 21 First Quarter |
60–100 |
| Thyme transplant |
Mar 31 | May 26 – Jun 16 | — First Quarter |
cut as needed |
| Zucchini / Summer Squash either |
May 5 | May 26 – Jun 25 | Jun 21 First Quarter |
45–60 |
| Basil either |
Apr 14 | Jun 2 – Jun 25 | Jun 15–20 Waxing Crescent |
30–60 |
| Dry Beans direct sow |
— | Jun 2 – Jun 30 | Jun 21 First Quarter |
85–100 |
| Pole Beans direct sow |
— | Jun 2 – Jul 5 | Jun 21 First Quarter |
60–75 |
| Pumpkin direct sow |
May 5 | Jun 2 – Jun 30 | Jun 21 First Quarter |
90–120 |
| Rosemary transplant |
May 26 | Jun 2 – Jun 25 | Jun 21 First Quarter |
cut as needed |
| Tomatillo transplant |
Apr 14 | Jun 2 – Jun 25 | Jun 21 First Quarter |
60–75 |
| Tomato transplant |
Apr 14 | Jun 2 – Jun 25 | Jun 21 First Quarter |
60–85 |
| Winter Squash direct sow |
May 5 | Jun 2 – Jun 30 | Jun 21 First Quarter |
85–110 |
| Cantaloupe / Muskmelon either |
May 5 | Jun 9 – Jun 30 | Jun 21 First Quarter |
75–90 |
| Eggplant transplant |
Mar 31 | Jun 9 – Jun 30 | Jun 21 First Quarter |
60–90 |
| Okra direct sow |
Apr 28 | Jun 9 – Jul 5 | Jun 21 First Quarter |
50–70 |
| Pepper transplant |
Mar 31 | Jun 9 – Jun 30 | Jun 21 First Quarter |
60–90 |
| Sweet Potato slips |
— | Jun 9 – Jul 5 | Jun 30–Jul 5 Waning Gibbous |
90–150 |
| Watermelon either |
May 5 | Jun 9 – Jun 30 | Jun 21 First Quarter |
70–90 |
Siembra de otoño en Casper
Las fechas de otoño se cuentan hacia atrás desde la primera helada y añaden tiempo por el «factor de otoño»: los días se acortan y refrescan, así que el cultivo crece más despacio de lo que promete el sobre. Sembrar tarde es la forma más común de que falle un huerto de otoño.
| Cultivo | Sembrar o trasplantar | Mejores días lunares | Días hasta la cosecha | Resistencia al frío |
|---|---|---|---|---|
| Cabbage | Jun 9 – Jun 21 | Jun 15–20 | 65–90 | hardy |
| Broccoli | Jun 14 – Jul 1 | Jun 15–20 | 55–80 | hardy |
| Cauliflower | Jun 14 – Jul 1 | Jun 15–20 | 55–80 | semi-hardy |
| Lettuce (head) | Jun 14 – Jun 26 | Jun 15–20 | 60–85 | semi-hardy |
| Peas (English/snap) | Jun 14 – Jul 1 | Jun 21 | 55–75 | hardy |
| Beet | Jun 19 – Jul 6 | Jun 29 | 50–65 | semi-hardy |
| Kale | Jun 19 – Jul 6 | Jun 19–20 | 50–65 | hardy |
| Kohlrabi | Jun 24 – Jul 11 | — | 45–60 | hardy |
| Cilantro | Jun 29 – Jul 11 | — | 45–70 | semi-hardy |
| Lettuce (leaf) | Jun 29 – Jul 16 | Jul 15–16 | 40–55 | semi-hardy |
| Turnip | Jun 29 – Jul 16 | Jun 30–Jul 5 | 40–60 | hardy |
| Spinach | Jul 4 – Jul 21 | Jul 15–20 | 35–50 | hardy |
| Dill | Jul 9 – Jul 16 | Jul 15–16 | 40–60 | semi-hardy |
| Radish | Jul 9 – Aug 3 | Jul 30–Aug 3 | 22–35 | hardy |
| Garlic | Aug 23 – Oct 13 | Aug 28–Sep 2 | 240–300 | hardy |
| Shallot | Sep 6 – Oct 7 | Sep 27–Oct 2 | 90–120 | hardy |
De dónde salen estos números
Las fechas de helada de esta página son normales observadas en estación, no estimaciones: vienen de Casper Natrona Co Ap (GHCN USW00024089), una de las 6.808 estaciones de EE. UU. de las Climate Normals 1991–2020 de la NOAA. La zona de rusticidad es del USDA Plant Hardiness Zone Map de 2023. Los tiempos de cultivo se expresan como desfases respecto a tus heladas, tomados de guías de siembra de la Extensión universitaria.
¿Qué precisión tiene todo esto?
Extension recommendations for the same crop routinely disagree by two to four weeks, and occasionally more, so these offsets should be presented as windows and starting points rather than deadlines. Three things drive the spread. (1) Regional risk tolerance: for warm-season crops, Colorado State and Utah State put tomatoes, peppers and melons out about 14 days after the last frost, while University of Missouri's calendar works out to roughly 25-35 days after the last frost and University of Maryland's window runs from the frost date itself out to 45 days past it. That is a real 6-week spread for the single most popular garden crop, and it exists because a short-season mountain state is optimizing against a short season while a humid continental state is optimizing against cold, wet spring soil. (2) Soil temperature versus calendar date: most Extension services now say the honest trigger is soil temperature at 4 inches, not the frost date, and the frost-relative number is a convenience translation. A cold, wet spring can push the real date two or three weeks past the calendar recommendation. (3) Days-to-maturity is variety-specific and is measured differently for direct-seeded versus transplanted crops - seed catalogs count from transplant date for tomatoes, peppers, eggplant and cole crops, but from sowing for roots and greens - so a 'days to maturity' range of 60-85 for tomato is genuinely 60-85 depending on which packet you bought. Additionally, the average last frost is a 50% probability, meaning half of all years have a frost after that date; Extension services commonly advise waiting 1-2 weeks past it for anything frost-tender, or being prepared to cover. Treat every number here as plus or minus about 10-14 days.
Sobre la estación en sí: una estación meteorológica es un punto. Las ciudades retienen el calor, los valles acumulan aire frío y un huerto en ladera norte puede ir dos semanas por detrás de otro a una milla. Toma esta página como punto de partida y deja que tu propio huerto la corrija: para eso está el diario de la app.
Lugares cercanos
Avisos de siembra para Casper
Una nota breve en cada luna nueva y llena con lo que está en su ventana ahora mismo en Casper, calculado con las fechas de helada de esta página. Gratis, y te das de baja con un clic.
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