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.

You can determine when to plant corn salad in Silvis by referring to the USDA zone info.

Planting Calendar for Corn salad

Frost tolerance for corn salad:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Corn salad are not cold tolerant which tells us that you need to wait until it warms up after all chance of frost has passed before you can plant them.

The earliest that you can plant corn salad in Silvis 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. Any later than that and your corn salad may not have a chance to really do well. You can get started a little bit earlier by starting your corn salad indoors.

Last Frost Date

On average the last frost is on April 15 in Silvis. In the coldest months of winter you should expect an average low temperature of -15°F.

Since the USDA zone info for Silvis is just an average the actual date of last frost will vary from year to year. Half of the time in Silvis it frosts late in the year after April 15 so just be sure to be ready to cover your corn salad in the event of a late frost.

USDA Zone Info for Silvis

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 Silvis

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