Las cuatro fechas que importan
| Fecha | Cuándo | Qué significa |
|---|---|---|
| Última helada de primavera (50 %) | Mar 10 | La mitad de los años hiela después de esta fecha. Es una media, no una garantía. |
| Última helada de primavera (10 %) | Mar 30 | Solo un año de cada diez hiela después de esta fecha. Úsala para lo que no puedas permitirte replantar. |
| Primera helada de otoño (50 %) | Nov 20 | 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 %) | Nov 3 | Un año de helada temprana. Si un cultivo tiene que terminar, apunta a cosechar antes de esta fecha. |
Siembra de primavera y verano en Richardson
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 |
— | Jan 9 – Feb 17 | Feb 1 Full Moon |
perennial — first real harvest next season |
| Garlic cloves/sets Mejor sembrarlo en otoño: mira abajo |
— | Jan 22 – Feb 22 | Feb 2–7 Waning Gibbous |
240–300 |
| Asparagus (crowns) transplant |
— | Jan 27 – Mar 3 | Feb 24 First Quarter |
perennial — first real harvest 2–3 years |
| Chives either |
Jan 13 | Jan 27 – Mar 3 | Feb 18–23 Waxing Crescent |
75–90 |
| Onion (from sets/transplants) cloves/sets |
— | Jan 27 – Mar 3 | Feb 2–7 Waning Gibbous |
90–120 |
| Peas (English/snap) direct sow |
— | Jan 27 – Mar 3 | Feb 24 First Quarter |
55–75 |
| Spinach direct sow |
— | Jan 27 – Mar 3 | Feb 18–23 Waxing Crescent |
35–50 |
| Cabbage transplant |
Jan 6 | Feb 3 – Mar 3 | Feb 18–23 Waxing Crescent |
65–90 |
| Collards either |
Jan 27 | Feb 3 – Mar 24 | Feb 18–23 Waxing Crescent |
55–85 |
| Kale either |
Jan 27 | Feb 3 – Mar 10 | Feb 18–23 Waxing Crescent |
50–65 |
| Lettuce (leaf) either |
Feb 3 | Feb 3 – Mar 31 | Feb 18–23 Waxing Crescent |
40–55 |
| Potato cloves/sets |
— | Feb 3 – Mar 10 | Mar 3 Full Moon |
70–120 |
| Radish direct sow |
— | Feb 3 – Mar 31 | Feb 3–8 Waning Gibbous |
22–35 |
| Turnip direct sow |
— | Feb 3 – Mar 17 | Feb 3–8 Waning Gibbous |
40–60 |
| Broccoli transplant |
Jan 6 | Feb 8 – Mar 10 | Feb 18–23 Waxing Crescent |
55–80 |
| Brussels Sprouts transplant |
Jan 6 | Feb 8 – Mar 10 | Feb 18–23 Waxing Crescent |
90–110 |
| Leek transplant |
Dec 30 | Feb 8 – Mar 10 | Feb 8, Mar 4–8 Waning Gibbous |
100–120 |
| Lettuce (head) transplant |
Jan 20 | Feb 8 – Mar 10 | Feb 18–23 Waxing Crescent |
60–85 |
| Parsley either |
Jan 6 | Feb 8 – Mar 17 | Feb 18–23 Waxing Crescent |
70–90 |
| Parsnip direct sow |
— | Feb 8 – Mar 17 | Mar 3 Full Moon |
100–150 |
| Shallot cloves/sets Mejor sembrarlo en otoño: mira abajo |
— | Feb 8 – Mar 10 | Feb 8, Mar 4–8 Waning Gibbous |
90–120 |
| Beet direct sow |
— | Feb 10 – Mar 31 | Mar 3 Full Moon |
50–65 |
| Kohlrabi either |
Jan 27 | Feb 10 – Mar 17 | Feb 18–23 Waxing Crescent |
45–60 |
| Carrot direct sow |
— | Feb 17 – Mar 31 | Mar 3 Full Moon |
65–85 |
| Cauliflower transplant |
Jan 6 | Feb 17 – Mar 10 | Feb 18–23 Waxing Crescent |
55–80 |
| Cilantro direct sow |
— | Feb 17 – Mar 31 | Feb 18–23 Waxing Crescent |
45–70 |
| Swiss Chard direct sow |
— | Feb 17 – Apr 9 | Feb 18–23 Waxing Crescent |
50–60 |
| Dill direct sow |
— | Feb 24 – Apr 9 | Mar 19–24 Waxing Crescent |
40–60 |
| Cucumber either |
Feb 17 | Mar 10 – Apr 9 | Mar 25 First Quarter |
50–70 |
| Green Beans (bush) direct sow |
— | Mar 10 – Apr 24 | Mar 25, Apr 23 First Quarter |
50–65 |
| Oregano transplant |
Jan 13 | Mar 10 – Mar 31 | Mar 25 First Quarter |
cut as needed |
| Sage transplant |
Jan 13 | Mar 10 – Mar 31 | Mar 25 First Quarter |
cut as needed |
| Sweet Corn direct sow |
— | Mar 10 – Apr 24 | Mar 25, Apr 23 First Quarter |
60–100 |
| Thyme transplant |
Jan 13 | Mar 10 – Mar 31 | Mar 25 First Quarter |
cut as needed |
| Zucchini / Summer Squash either |
Feb 17 | Mar 10 – Apr 9 | Mar 25 First Quarter |
45–60 |
| Basil either |
Jan 27 | Mar 17 – Apr 9 | Mar 19–24 Waxing Crescent |
30–60 |
| Dry Beans direct sow |
— | Mar 17 – Apr 14 | Mar 25 First Quarter |
85–100 |
| Pole Beans direct sow |
— | Mar 17 – Apr 19 | Mar 25 First Quarter |
60–75 |
| Pumpkin direct sow |
Feb 17 | Mar 17 – Apr 14 | Mar 25 First Quarter |
90–120 |
| Rosemary transplant |
Mar 10 | Mar 17 – Apr 9 | Mar 25 First Quarter |
cut as needed |
| Tomatillo transplant |
Jan 27 | Mar 17 – Apr 9 | Mar 25 First Quarter |
60–75 |
| Tomato transplant |
Jan 27 | Mar 17 – Apr 9 | Mar 25 First Quarter |
60–85 |
| Winter Squash direct sow |
Feb 17 | Mar 17 – Apr 14 | Mar 25 First Quarter |
85–110 |
| Cantaloupe / Muskmelon either |
Feb 17 | Mar 24 – Apr 14 | Mar 25 First Quarter |
75–90 |
| Eggplant transplant |
Jan 13 | Mar 24 – Apr 14 | Mar 25 First Quarter |
60–90 |
| Okra direct sow |
Feb 10 | Mar 24 – Apr 19 | Mar 25 First Quarter |
50–70 |
| Pepper transplant |
Jan 13 | Mar 24 – Apr 14 | Mar 25 First Quarter |
60–90 |
| Sweet Potato slips |
— | Mar 24 – Apr 19 | Apr 2–7 Waning Gibbous |
90–150 |
| Watermelon either |
Feb 17 | Mar 24 – Apr 14 | Mar 25 First Quarter |
70–90 |
Siembra de otoño en Richardson
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 | Jul 5 – Aug 10 | Jul 21 | 60–85 | very tender |
| Brussels Sprouts | Jul 8 – Jul 25 | Jul 15–20 | 90–110 | hardy |
| Potato | Jul 13 – Aug 14 | Jul 29 | 70–120 | semi-hardy |
| Sweet Corn | Jul 18 – Aug 10 | Jul 21 | 60–100 | tender |
| Pole Beans | Jul 28 – Aug 10 | — | 60–75 | tender |
| Parsley | Jul 31 – Aug 14 | Aug 13–14 | 70–90 | semi-hardy |
| Okra | Aug 2 – Sep 1 | Aug 19 | 50–70 | very tender |
| Cabbage | Aug 7 – Aug 19 | Aug 13–18 | 65–90 | hardy |
| Carrot | Aug 7 – Aug 19 | — | 65–85 | semi-hardy |
| Collards | Aug 7 – Aug 29 | Aug 13–18 | 55–85 | hardy |
| Cucumber | Aug 7 – Aug 20 | Aug 19 | 50–70 | tender |
| Broccoli | Aug 12 – Aug 29 | Aug 13–18 | 55–80 | hardy |
| Cauliflower | Aug 12 – Aug 29 | Aug 13–18 | 55–80 | semi-hardy |
| Green Beans (bush) | Aug 12 – Aug 20 | Aug 19 | 50–65 | tender |
| Lettuce (head) | Aug 12 – Aug 24 | Aug 13–18 | 60–85 | semi-hardy |
| Peas (English/snap) | Aug 12 – Aug 29 | Aug 19 | 55–75 | hardy |
| Beet | Aug 17 – Sep 3 | Aug 27 | 50–65 | semi-hardy |
| Kale | Aug 17 – Sep 3 | Aug 17–18 | 50–65 | hardy |
| Swiss Chard | Aug 17 – Sep 3 | Aug 17–18 | 50–60 | semi-hardy |
| Zucchini / Summer Squash | Aug 17 – Aug 25 | Aug 19 | 45–60 | tender |
| Basil | Aug 22 – Sep 9 | — | 30–60 | very tender |
| Kohlrabi | Aug 22 – Sep 8 | — | 45–60 | hardy |
| Cilantro | Aug 27 – Sep 8 | — | 45–70 | semi-hardy |
| Lettuce (leaf) | Aug 27 – Sep 13 | Sep 11–13 | 40–55 | semi-hardy |
| Turnip | Aug 27 – Sep 13 | Aug 28–Sep 2 | 40–60 | hardy |
| Spinach | Sep 1 – Sep 18 | Sep 11–16 | 35–50 | hardy |
| Dill | Sep 6 – Sep 13 | Sep 11–13 | 40–60 | semi-hardy |
| Radish | Sep 6 – Oct 1 | Sep 27–Oct 1 | 22–35 | hardy |
| Garlic | Oct 21 – Dec 11 | Oct 26–31 | 240–300 | hardy |
| Shallot | Nov 4 – Dec 5 | Nov 25–30 | 90–120 | hardy |
De dónde salen estos números
No hay ninguna estación meteorológica con registro largo dentro de Richardson, así que estas fechas de helada son modeladas, no observadas. Salen de una malla climática de medio grado construida ajustando las fechas de helada de 6.808 estaciones de la NOAA (normales 1991–2020) contra el terreno y el ráster de rusticidad del USDA de 2023, y leyendo luego la celda en la que cae tu ciudad. Contrastado con las propias estaciones, ese modelo acierta con una semana de margen de media, y su zona coincide exactamente con la de la estación el 67 % de las veces y dentro de media zona el 97 %. Una celda cubre unas 35 por 28 millas, así que esto es una respuesta de barrio, no de patio trasero. Si hay una ubicación con estación real cerca de ti, prefiérela.
¿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.
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Avisos de siembra para Richardson
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