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.

You can determine when it's the best time to plant alternanthera in Sulphur Springs by referring to the USDA zone info.

Planting Calendar for Alternanthera

Frost tolerance for alternanthera:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's not a good idea to plant alternanthera until after the last frost because they do not do well in cold weather.

The earliest that you can plant alternanthera in Sulphur Springs is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant alternanthera and expect a good harvest is probably August. Any later than that and your alternanthera may not have a chance to really do well. You can get started a few weeks earlier by starting your alternanthera indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in Sulphur Springs. You should expect an average low temperature of 10°F in the coldest months of winter.

Since the USDA zone info for Sulphur Springs is not always accurate the actual date of last frost can change quite a bit from year to year. Since half of the time in Sulphur Springs there is a last frost after March 15 be ready to cover your alternanthera if you have a late frost.

USDA Zone Info for Sulphur Springs

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.

Plants to Grow in Sulphur Springs

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