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.

In Owensboro you can determine when it's the best time to plant lisianthus by referring to the USDA zone info.

Planting Calendar for Lisianthus

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

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

The earliest that you can plant lisianthus in Owensboro 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 really do well. Starting your lisianthus indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Owensboro. In the coldest months of winter you can expect an average low temperature of -5°F.

It's important to remember that USDA zone info for Owensboro is not always accurate and the actual date of last frost changes from year to year. Since half of the time in Owensboro you get a frost after April 15 be ready to protect your lisianthus if you have a late frost.

USDA Zone Info for Owensboro

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Owensboro

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