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.

The earliest that you can plant corn in Bethalto should be determined by looking at the USDA zone info.

Planting Calendar for Corn

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

Since corn require warm weather you really should wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant corn in Bethalto 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 corn and expect a good harvest is probably August. If you wait any later than that and your corn may not have a chance to really do well. You can get started a couple of weeks earlier by starting your corn indoors.

Last Frost Date

The average date of last frost is April 15 in Bethalto. In the coldest months of winter you can expect an average low temperature of -10°F.

Always keep in mind that USDA zone info for Bethalto may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in Bethalto last frost occurs after April 15 be ready to protect your corn in the event of one of those late frosts.

USDA Zone Info for Bethalto

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 Bethalto

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