Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Rockwall should be looked at to determine when you can plant torenia.

Planting Calendar for Torenia

Frost tolerance for torenia:	Not tolerant of frost.
When to plant:	After the last frost.

You can not plant torenia until after the last frost has passed because they do not do well in cold weather.

The earliest that you can plant torenia in Rockwall 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 torenia and expect a good harvest is probably August. You probably don't want to wait any later than that or else your torenia may not have a chance to fully mature. Starting your torenia indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is March 15 in Rockwall. It might get as low as 10°F during the coldest months of winter.

Since the USDA zone info for Rockwall is an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Rockwall you get a frost after March 15 be ready to cover your torenia in the event of a late frost.

USDA Zone Info for Rockwall

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 Rockwall

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