Before planting it is a good idea to find your USDA Zone info to determine 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.

By checking out the USDA zone info for Duncan it's possible to determine when it's the best time to plant corn.

Planting Calendar for Corn

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

Since corn require warm weather it's important to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant corn in Duncan 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. You probably don't want to wait any later than that or else your corn may not have a chance to fully mature. Starting your 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 Duncan. In the coldest months of winter you should expect an average low temperature of 5°F.

Just be sure to remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Duncan and it is different every year. Since half of the time in Duncan there is a last frost after April 15 be ready to protect your corn if you have one of those late frosts.

USDA Zone Info for Duncan

Here is the info for USDA Zone 7b.

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

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

Plants to Grow in Duncan

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