Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Presque Isle you can figure out when you can plant lisianthus by checking out the USDA zone info.

Planting Calendar for Lisianthus

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

Lisianthus are not cold tolerant which tells us that it's necessary to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant lisianthus in Presque Isle is May. However, you really should wait until June 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. If you wait any later than that and 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

The average date of last frost is May 15 in Presque Isle. It might get as low as -30°F during the coldest months of winter.

Since the USDA zone info for Presque Isle is not always accurate the actual date of last frost is different every year. Half of the time in Presque Isle you get a frost after May 15 so make sure that you are ready to protect your lisianthus if you have one of those late frosts.

USDA Zone Info for Presque Isle

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Presque Isle

You may be interested in your other planting guides for Presque Isle.