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.

In Worthington you can determine when you can plant corn salad by using the USDA zone info.

Planting Calendar for Corn salad

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

It's probably not a good idea to plant corn salad until after the last frost because they do not do well in cold weather.

The earliest that you can plant corn salad in Worthington 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 salad and expect a good harvest is probably August. Any later than that and your corn salad may not have a chance to really do well. You can get started a few weeks earlier by starting your corn salad indoors.

Last Frost Date

On average the last frost has passed is on May 15 in Worthington. In the coldest months of winter you should expect an average low temperature of -25°F.

It's important to remember that USDA zone info for Worthington is just an average and the actual date of last frost is different every year. Since half of the time in Worthington you get a frost after May 15 be ready to cover your corn salad if you have one of those late frosts.

USDA Zone Info for Worthington

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 Worthington

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