The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By checking out the USDA zone info for Ishpeming you will be able to determine when it's possible to plant corn.

Planting Calendar for Corn

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

Since corn require warm weather you must wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant corn in Ishpeming 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 corn and expect a good harvest is probably August. Any later than that and your corn may not have a chance to fully mature. Starting your corn indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Ishpeming the average date of last frost happens on May 15. In the coldest months of winter you should expect an average low temperature of -25°F.

Since the USDA zone info for Ishpeming is not always accurate the actual date of last frost can change quite a bit from year to year. Since half of the time in Ishpeming you get a frost after May 15 be ready to protect your corn if you have a surprise late frost.

USDA Zone Info for Ishpeming

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Ishpeming

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