The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You will be able to estimate when you can plant tomatos by using the USDA zone info for Port Isabel.

Planting Calendar for Tomatos

Frost tolerance for tomatos:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Since tomatos do not do well in cold weather it is important to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant tomatos in Port Isabel is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant tomatos and expect a good harvest is probably September. You probably don't want to wait any later than that or else your tomatos may not have a chance to really do well. You can get started a few weeks earlier by starting your tomatos indoors.

Last Frost Date

The average date of last frost is January 31 in Port Isabel. You should expect an average low temperature of 30°F in the coldest months of winter.

Remember that the actual date of last frost is just an average because it is based on the USDA zone info for Port Isabel and it changes from year to year. Since half of the time in Port Isabel you get a frost after January 31 be ready to cover your tomatos if you have a surprise late frost.

USDA Zone Info for Port Isabel

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Port Isabel

You may be interested in your other planting guides for Port Isabel.