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.

One way of determining when it's a good idea to plant torenia is to refer to the USDA zone info for Atchison.

Planting Calendar for Torenia

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

Torenia do not do well in cold weather which means that it's important to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant torenia in Atchison 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. Any later than that and your torenia may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your torenia indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Atchison. In the coldest months of winter you can expect an average low temperature of -10°F.

Since the USDA zone info for Atchison is just an average the actual date of last frost changes from year to year. Since half of the time in Atchison there is a last frost after April 15 be ready to cover your torenia in the event of a surprise late frost.

USDA Zone Info for Atchison

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°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 -5°F.

Plants to Grow in Atchison

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