USDA Hardiness Zone 9b
Frost Dates for 77486 — West Columbia, Texas
Averages from Angleton 2 W, Tx US, the nearest reporting station, 12.3 miles away.
Plant tender crops after January 29, and expect the first autumn freeze around December 31. That leaves about 333 frost-free days.
- Last spring frost
- January 29
- First fall frost
- December 31
- Growing season
- 333 days
- Hardiness zone
- 9b
50% probability
50% probability
frost-free
25 to 30°F annual low
Planting calendar for 77486
| When | What to do |
|---|---|
| November 20 – December 4 | Start peppers and aubergines indoors They need eight to ten weeks under lights before they can go out. |
| December 4 – December 18 | Start tomatoes indoors Six to eight weeks gives a transplant big enough to set fruit early. |
| January 1 – January 15 | Sow peas, spinach, lettuce, radish outdoors These tolerate light frost and prefer to germinate in cool soil. |
| January 29 onward | Transplant tomatoes, peppers, basil, squash, cucumbers The average last freeze has passed — still watch the actual forecast. |
| by October 8 | Sow the autumn crop of carrots, beets and brassicas They need about twelve weeks to size up before growth stops. |
| by December 17 | Harvest tender crops, or be ready to cover them A first freeze two weeks early is well within normal variation. |
| December 31 onward | Plant garlic, mulch beds, lift tender bulbs Garlic wants a cold spell; bare soil loses structure over winter. |
What these dates mean
Wait until after January 29 to put tender plants — tomatoes, peppers, basil, squash — in the ground. That is the date by which half of years in West Columbia, Texas are past their last freeze. Harvest before December 31, which leaves roughly 333 frost-free days.
ZIP 77486 sits in USDA hardiness zone 9b, meaning the average coldest night of the year falls between 25 to 30°F. Zone decides what survives the winter; frost dates decide when to plant each spring. They are different questions, and a plant can pass one and fail the other.
These are thirty-year NOAA averages for 1991–2020, not a forecast. Any individual year can frost two to three weeks either side of these dates, so check the actual forecast before planting out.