One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By reviewing the USDA zone info for Sulphur it's a good idea to estimate when it's the best time to plant chard.

Planting Calendar for Chard

Frost tolerance for chard:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Chard can survive in some cold which tells us that you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant chard in Sulphur 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 chard and expect a good harvest is probably October. If you wait any later than that and your chard may not have a chance to grow to maturity. You can get started a little bit earlier by starting your chard indoors.

Last Frost Date

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

Since the USDA zone info for Sulphur is an average the actual date of last frost changes from year to year. Half of the time in Sulphur you get surprised by a frost after February 15 so make sure that you are prepared to protect your chard in the event of one of those late frosts.

USDA Zone Info for Sulphur

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 Sulphur

You may be interested in your other planting guides for Sulphur.