One of the best tools that you have as gardeners to help us estimate your gardening schedule is the 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.

A common way of estimating when it's the best time to plant corn salad is to refer to the USDA zone info for Highwood.

Planting Calendar for Corn salad

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

It's not a good idea to plant corn salad until after the last frost because they require warm weather.

The earliest that you can plant corn salad in Highwood 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 salad and expect a good harvest is probably August. If you wait any later than that and your corn salad may not have a chance to fully mature. If you are starting your corn salad indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In Highwood the average date of last frost happens on April 15. It might get as low as -15°F during the coldest months of winter.

Since the USDA zone info for Highwood is just an average the actual date of last frost changes from year to year. Since half of the time in Highwood there is a last frost after April 15 be ready to cover your corn salad if you have one of those late frosts.

USDA Zone Info for Highwood

Here is the info for USDA Zone 5b.

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

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Highwood

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