The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You should be able to figure out when it's possible to plant torenia by looking at the USDA zone info for Marshall.

Planting Calendar for Torenia

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

Torenia require warm weather which means that you need to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant torenia in Marshall 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. If you wait any later than that and your torenia may not have a chance to grow to maturity. You can get started a little bit earlier by starting your torenia indoors.

Last Frost Date

The average date of last frost is March 15 in Marshall. You should expect an average low temperature of 15°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Marshall may not be accurate from year to year and the actual date of last frost changes from year to year. Half of the time in Marshall there is a last frost after March 15 so be sure to be ready to cover your torenia in the event of a late frost.

USDA Zone Info for Marshall

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Marshall

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