Las cuatro fechas que importan
| Fecha | Cuándo | Qué significa |
|---|---|---|
| Última helada de primavera (50 %) | Apr 26 | La mitad de los años hiela después de esta fecha. Es una media, no una garantía. |
| Última helada de primavera (10 %) | May 7 | Solo un año de cada diez hiela después de esta fecha. Úsala para lo que no puedas permitirte replantar. |
| Primera helada de otoño (50 %) | Oct 15 | 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 %) | Oct 2 | Un año de helada temprana. Si un cultivo tiene que terminar, apunta a cosechar antes de esta fecha. |
Siembra de primavera y verano en Portland
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 |
— | Feb 25 – Apr 5 | Mar 3, Apr 1 Full Moon |
perennial — first real harvest next season |
| Garlic cloves/sets Mejor sembrarlo en otoño: mira abajo |
— | Mar 10 – Apr 10 | Mar 10, Apr 2–6 Waning Gibbous |
240–300 |
| Asparagus (crowns) transplant |
— | Mar 15 – Apr 19 | Mar 25 First Quarter |
perennial — first real harvest 2–3 years |
| Chives either |
Mar 1 | Mar 15 – Apr 19 | Mar 19–24 Waxing Crescent |
75–90 |
| Onion (from sets/transplants) cloves/sets |
— | Mar 15 – Apr 19 | Apr 2–7 Waning Gibbous |
90–120 |
| Peas (English/snap) direct sow |
— | Mar 15 – Apr 19 | Mar 25 First Quarter |
55–75 |
| Spinach direct sow |
— | Mar 15 – Apr 19 | Mar 19–24 Waxing Crescent |
35–50 |
| Cabbage transplant |
Feb 22 | Mar 22 – Apr 19 | Mar 22–24, Apr 18–19 Waxing Crescent |
65–90 |
| Collards either |
Mar 15 | Mar 22 – May 10 | Mar 22–24, Apr 18–20 Waxing Crescent |
55–85 |
| Kale either |
Mar 15 | Mar 22 – Apr 26 | Mar 22–24, Apr 18–20 Waxing Crescent |
50–65 |
| Lettuce (leaf) either |
Mar 22 | Mar 22 – May 17 | Mar 22–24, Apr 18–20 Waxing Crescent |
40–55 |
| Potato cloves/sets |
— | Mar 22 – Apr 26 | Apr 1 Full Moon |
70–120 |
| Radish direct sow |
— | Mar 22 – May 17 | Apr 2–7 Waning Gibbous |
22–35 |
| Turnip direct sow |
— | Mar 22 – May 3 | Apr 2–7 Waning Gibbous |
40–60 |
| Broccoli transplant |
Feb 22 | Mar 27 – Apr 26 | Apr 18–22 Waxing Crescent |
55–80 |
| Brussels Sprouts transplant |
Feb 22 | Mar 27 – Apr 26 | Apr 18–22 Waxing Crescent |
90–110 |
| Leek transplant |
Feb 15 | Mar 27 – Apr 26 | Apr 2–7 Waning Gibbous |
100–120 |
| Lettuce (head) transplant |
Mar 8 | Mar 27 – Apr 26 | Apr 18–22 Waxing Crescent |
60–85 |
| Parsley either |
Feb 22 | Mar 27 – May 3 | Apr 18–22 Waxing Crescent |
70–90 |
| Parsnip direct sow |
— | Mar 27 – May 3 | Apr 1, May 1 Full Moon |
100–150 |
| Shallot cloves/sets Mejor sembrarlo en otoño: mira abajo |
— | Mar 27 – Apr 26 | Apr 2–7 Waning Gibbous |
90–120 |
| Beet direct sow |
— | Mar 29 – May 17 | Apr 1, May 1 Full Moon |
50–65 |
| Kohlrabi either |
Mar 15 | Mar 29 – May 3 | Apr 18–22 Waxing Crescent |
45–60 |
| Carrot direct sow |
— | Apr 5 – May 17 | May 1 Full Moon |
65–85 |
| Cauliflower transplant |
Feb 22 | Apr 5 – Apr 26 | Apr 18–22 Waxing Crescent |
55–80 |
| Cilantro direct sow |
— | Apr 5 – May 17 | Apr 18–22, May 17 Waxing Crescent |
45–70 |
| Swiss Chard direct sow |
— | Apr 5 – May 26 | Apr 18–22, May 17 Waxing Crescent |
50–60 |
| Dill direct sow |
— | Apr 12 – May 26 | Apr 18–22, May 17 Waxing Crescent |
40–60 |
| Cucumber either |
Apr 5 | Apr 26 – May 26 | May 23 First Quarter |
50–70 |
| Green Beans (bush) direct sow |
— | Apr 26 – Jun 10 | May 23 First Quarter |
50–65 |
| Oregano transplant |
Mar 1 | Apr 26 – May 17 | — First Quarter |
cut as needed |
| Sage transplant |
Mar 1 | Apr 26 – May 17 | — First Quarter |
cut as needed |
| Sweet Corn direct sow |
— | Apr 26 – Jun 10 | May 23 First Quarter |
60–100 |
| Thyme transplant |
Mar 1 | Apr 26 – May 17 | — First Quarter |
cut as needed |
| Zucchini / Summer Squash either |
Apr 5 | Apr 26 – May 26 | May 23 First Quarter |
45–60 |
| Basil either |
Mar 15 | May 3 – May 26 | May 17–22 Waxing Crescent |
30–60 |
| Dry Beans direct sow |
— | May 3 – May 31 | May 23 First Quarter |
85–100 |
| Pole Beans direct sow |
— | May 3 – Jun 5 | May 23 First Quarter |
60–75 |
| Pumpkin direct sow |
Apr 5 | May 3 – May 31 | May 23 First Quarter |
90–120 |
| Rosemary transplant |
Apr 26 | May 3 – May 26 | May 23 First Quarter |
cut as needed |
| Tomatillo transplant |
Mar 15 | May 3 – May 26 | May 23 First Quarter |
60–75 |
| Tomato transplant |
Mar 15 | May 3 – May 26 | May 23 First Quarter |
60–85 |
| Winter Squash direct sow |
Apr 5 | May 3 – May 31 | May 23 First Quarter |
85–110 |
| Cantaloupe / Muskmelon either |
Apr 5 | May 10 – May 31 | May 23 First Quarter |
75–90 |
| Eggplant transplant |
Mar 1 | May 10 – May 31 | May 23 First Quarter |
60–90 |
| Okra direct sow |
Mar 29 | May 10 – Jun 5 | May 23 First Quarter |
50–70 |
| Pepper transplant |
Mar 1 | May 10 – May 31 | May 23 First Quarter |
60–90 |
| Sweet Potato slips |
— | May 10 – Jun 5 | Jun 1–5 Waning Gibbous |
90–150 |
| Watermelon either |
Apr 5 | May 10 – May 31 | May 23 First Quarter |
70–90 |
Siembra de otoño en Portland
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 |
|---|---|---|---|---|
| Tomato | May 30 – Jul 5 | Jun 21 | 60–85 | very tender |
| Brussels Sprouts | Jun 2 – Jun 19 | Jun 15–19 | 90–110 | hardy |
| Potato | Jun 7 – Jul 9 | Jun 29 | 70–120 | semi-hardy |
| Sweet Corn | Jun 12 – Jul 5 | Jun 21 | 60–100 | tender |
| Pole Beans | Jun 22 – Jul 5 | — | 60–75 | tender |
| Parsley | Jun 25 – Jul 9 | — | 70–90 | semi-hardy |
| Okra | Jun 27 – Jul 27 | Jul 21 | 50–70 | very tender |
| Cabbage | Jul 2 – Jul 14 | — | 65–90 | hardy |
| Carrot | Jul 2 – Jul 14 | — | 65–85 | semi-hardy |
| Collards | Jul 2 – Jul 24 | Jul 15–20 | 55–85 | hardy |
| Cucumber | Jul 2 – Jul 15 | — | 50–70 | tender |
| Broccoli | Jul 7 – Jul 24 | Jul 15–20 | 55–80 | hardy |
| Cauliflower | Jul 7 – Jul 24 | Jul 15–20 | 55–80 | semi-hardy |
| Green Beans (bush) | Jul 7 – Jul 15 | — | 50–65 | tender |
| Lettuce (head) | Jul 7 – Jul 19 | Jul 15–19 | 60–85 | semi-hardy |
| Peas (English/snap) | Jul 7 – Jul 24 | Jul 21 | 55–75 | hardy |
| Beet | Jul 12 – Jul 29 | Jul 29 | 50–65 | semi-hardy |
| Kale | Jul 12 – Jul 29 | Jul 15–20 | 50–65 | hardy |
| Swiss Chard | Jul 12 – Jul 29 | Jul 15–20 | 50–60 | semi-hardy |
| Zucchini / Summer Squash | Jul 12 – Jul 20 | — | 45–60 | tender |
| Basil | Jul 17 – Aug 4 | Jul 17–20 | 30–60 | very tender |
| Kohlrabi | Jul 17 – Aug 3 | Jul 17–20 | 45–60 | hardy |
| Cilantro | Jul 22 – Aug 3 | — | 45–70 | semi-hardy |
| Lettuce (leaf) | Jul 22 – Aug 8 | — | 40–55 | semi-hardy |
| Turnip | Jul 22 – Aug 8 | Jul 30–Aug 4 | 40–60 | hardy |
| Spinach | Jul 27 – Aug 13 | Aug 13 | 35–50 | hardy |
| Dill | Aug 1 – Aug 8 | — | 40–60 | semi-hardy |
| Radish | Aug 1 – Aug 26 | Aug 1–4 | 22–35 | hardy |
| Garlic | Sep 15 – Nov 5 | Sep 27–Oct 2 | 240–300 | hardy |
| Shallot | Sep 29 – Oct 30 | Sep 29–Oct 2, Oct 27–28 | 90–120 | hardy |
De dónde salen estos números
Las fechas de helada de esta página son normales observadas en estación, no estimaciones: vienen de Portland Intl Jetport (GHCN USW00014764), 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 Portland
Una nota breve en cada luna nueva y llena con lo que está en su ventana ahora mismo en Portland, calculado con las fechas de helada de esta página. Gratis, y te das de baja con un clic.
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