Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of getting a good idea when it's the best time to plant mustard is to refer to the USDA zone info for Port Arthur.

Planting Calendar for Mustard

Frost tolerance for mustard:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Since mustard require warm weather you must wait until after the last frost has passed before you can plant them.

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

The last month that you can plant mustard and expect a good harvest is probably September. If you wait any later than that and your mustard may not have a chance to grow to maturity. If you are starting your mustard indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost has passed is on February 15 in Port Arthur. You should expect an average low temperature of 20°F in the coldest months of winter.

Keep in mind that USDA zone info for Port Arthur is not always accurate and the actual date of last frost is different every year. Since half of the time in Port Arthur last frost occurs after February 15 be ready to cover your mustard in the event of a late frost.

USDA Zone Info for Port Arthur

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Port Arthur

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