The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Highland should be reviewed to figure out when it's a good idea to plant corn salad.

Planting Calendar for Corn salad

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

Since corn salad are not cold tolerant it is necessary to wait until after the last frost has passed before you can plant them.

The earliest that you can plant corn salad in Highland 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 corn salad and expect a good harvest is probably September. Any later than that and your corn salad may not have a chance to grow to maturity. Starting your corn salad indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is February 15 in Highland. You should expect an average low temperature of 25°F in the coldest months of winter.

Remember that USDA zone info for Highland 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 Highland you get surprised by a frost after February 15 be ready to protect your corn salad if you have a late frost.

USDA Zone Info for Highland

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°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 30°F.

Plants to Grow in Highland

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