The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. 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 to plant calliopsis is to refer to the USDA zone info for Barberton.

Planting Calendar for Calliopsis

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

Since calliopsis are not cold tolerant you must wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant calliopsis in Barberton 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 calliopsis and expect a good harvest is probably August. Any later than that and your calliopsis may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your calliopsis indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Barberton. It might get as low as -10°F during the coldest months of winter.

Since the USDA zone info for Barberton is just an average the actual date of last frost will vary from year to year. Half of the time in Barberton it frosts late in the year after April 15 so make sure that you are prepared to protect your calliopsis if you have a late frost.

USDA Zone Info for Barberton

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 Barberton

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