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 can determine when you can plant watercress in Corpus Christi by reviewing the USDA zone info.

Planting Calendar for Watercress

Frost tolerance for watercress:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Watercress do ok in moderate cold which tells us that you can plant them slightly earlier than more sensitive plants.

The earliest that you can plant watercress in Corpus Christi 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 watercress and expect a good harvest is probably September. Any later than that and your watercress may not have a chance to fully mature. Starting your watercress indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost is on February 15 in Corpus Christi. In the coldest months of winter you should expect an average low temperature of 25°F.

Since the USDA zone info for Corpus Christi is an average the actual date of last frost is different every year. Half of the time in Corpus Christi it frosts late in the year after February 15 so always be ready to protect your watercress in the event of a late frost.

USDA Zone Info for Corpus Christi

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Corpus Christi

You may be interested in your other planting guides for Corpus Christi.