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USDA Hardiness Zone 9a

Frost Dates for 78014 — Cotulla, Texas

Averages from Cotulla La Salle Co Ap, Tx US, the nearest reporting station, 1.5 miles away.

Plant tender crops after February 11, and expect the first autumn freeze around December 3. That leaves about 300 frost-free days.

Last spring frost
February 11

50% probability

First fall frost
December 3

50% probability

Growing season
300 days

frost-free

Hardiness zone
9a

20 to 25°F annual low

Planting calendar for 78014

What to do and when, based on the frost normals for Cotulla, Texas
WhenWhat to do
December 3 – December 17

Start peppers and aubergines indoors

They need eight to ten weeks under lights before they can go out.

December 17 – December 31

Start tomatoes indoors

Six to eight weeks gives a transplant big enough to set fruit early.

January 14 – January 28

Sow peas, spinach, lettuce, radish outdoors

These tolerate light frost and prefer to germinate in cool soil.

February 11 onward

Transplant tomatoes, peppers, basil, squash, cucumbers

The average last freeze has passed — still watch the actual forecast.

by September 10

Sow the autumn crop of carrots, beets and brassicas

They need about twelve weeks to size up before growth stops.

by November 19

Harvest tender crops, or be ready to cover them

A first freeze two weeks early is well within normal variation.

December 3 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 February 11 to put tender plants — tomatoes, peppers, basil, squash — in the ground. That is the date by which half of years in Cotulla, Texas are past their last freeze. Harvest before December 3, which leaves roughly 300 frost-free days.

ZIP 78014 sits in USDA hardiness zone 9a, meaning the average coldest night of the year falls between 20 to 25°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.

Other zone 9a ZIP codes in Texas