Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You will be able to estimate when it's possible to plant iceberg lettuce by using the USDA zone info for Delavan.

Planting Calendar for Iceberg lettuce

Frost tolerance for iceberg lettuce:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Iceberg lettuce are one of those plants that can tolerate a tiny bit of cold weather which means that you can plant them slightly earlier than more sensitive plants.

The earliest that you can plant iceberg lettuce in Delavan 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 iceberg lettuce and expect a good harvest is probably August. If you wait any later than that and your iceberg lettuce may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your iceberg lettuce indoors.

Last Frost Date

The average date of last frost is April 15 in Delavan. You should expect an average low temperature of -15°F in the coldest months of winter.

Always keep in mind that USDA zone info for Delavan is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Delavan last frost occurs after April 15 so always be ready to protect your iceberg lettuce in the event of a late frost.

USDA Zone Info for Delavan

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 Delavan

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