One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By referring to the USDA zone info for Cottonwood it's possible to figure out when to plant torenia.

Planting Calendar for Torenia

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

Since torenia require warm weather it is necessary to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant torenia in Cottonwood 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 grow to maturity. 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 Cottonwood. It might get as low as 15°F during the coldest months of winter.

Keep in mind that USDA zone info for Cottonwood may not be accurate from year to year and the actual date of last frost is different every year. Since half of the time in Cottonwood it frosts late in the year after March 15 be ready to protect your torenia in the event of a surprise late frost.

USDA Zone Info for Cottonwood

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 Cottonwood

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