One of the best tools that you have as gardeners to help us estimate 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.

A way of making a decision about when it's the best time to plant schizanthus is to consult the USDA zone info for Presque Isle.

Planting Calendar for Schizanthus

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

Since schizanthus are not cold tolerant you must wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant schizanthus 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 schizanthus and expect a good harvest is probably August. Any later than that and your schizanthus may not have a chance to fully mature. Starting your schizanthus indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Presque Isle the average date of last frost happens on May 15. In the coldest months of winter you can expect an average low temperature of -30°F.

Remember that USDA zone info for Presque Isle is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Presque Isle last frost occurs after May 15 so just be sure to be ready to protect your schizanthus in the event of a surprise late frost.

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.