One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You should be able to determine when to plant potatos by using the USDA zone info for Port Isabel.

Planting Calendar for Potatos

Frost tolerance for potatos:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Potatos are very cold tolerant which means that you can plant them a quite a bit earlier than more sensitive plants.

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

The last month that you can plant potatos and expect a good harvest is probably October. Any later than that and your potatos may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your potatos indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on January 31 in Port Isabel. In the coldest months of winter you should expect an average low temperature of 30°F.

Always keep in mind that USDA zone info for Port Isabel is just an average and the actual date of last frost is different every year. Half of the time in Port Isabel you get surprised by a frost after January 31 so be sure to be ready to protect your potatos if you have one of those late frosts.

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.