One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By using the USDA zone info for Michigan City it's a good idea to determine when to plant sweet corn.

Planting Calendar for Sweet corn

Frost tolerance for sweet corn:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

You can plant sweet corn a bit earlier in the year because they are barely cold tolerant.

The earliest that you can plant sweet corn in Michigan City is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant sweet corn and expect a good harvest is probably August. You probably don't want to wait any later than that or else your sweet corn may not have a chance to fully mature. Starting your sweet corn indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Michigan City. You should expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Michigan City may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Michigan City you get surprised by a frost after April 15 be ready to cover your sweet corn if you have a surprise late frost.

USDA Zone Info for Michigan City

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Michigan City

You may be interested in your other planting guides for Michigan City.