Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of determining when to plant lisianthus is to use the USDA zone info for Frankfort.

Planting Calendar for Lisianthus

Frost tolerance for lisianthus:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

You should not plant lisianthus until after the last frost when the weather gets warmer because they require warm weather.

The earliest that you can plant lisianthus in Frankfort 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 lisianthus and expect a good harvest is probably August. You probably don't want to wait any later than that or else your lisianthus may not have a chance to fully mature. If you are starting your lisianthus indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Frankfort. You can expect an average low temperature of -15°F in the coldest months of winter.

Keep in mind that USDA zone info for Frankfort is just an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Frankfort you get surprised by a frost after April 15 be ready to protect your lisianthus in the event of one of those late frosts.

USDA Zone Info for Frankfort

Here is the info for USDA Zone 5b.

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

Plants to Grow in Frankfort

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