One of the best tools that you have as gardeners to help us determine 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.

A common way of getting a good idea when it's a good idea to plant iceberg lettuce is to examine the USDA zone info for Fond Du Lac.

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.

Since iceberg lettuce do ok in moderate cold you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant iceberg lettuce in Fond Du Lac 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. You probably don't want to wait any later than that or else your iceberg lettuce may not have a chance to really do well. You can get started a little bit earlier by starting your iceberg lettuce indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Fond Du Lac. You should expect an average low temperature of -20°F in the coldest months of winter.

Just be sure to remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Fond Du Lac and it will vary from year to year. Half of the time in Fond Du Lac it frosts late in the year after April 15 so make sure that you are ready to protect your iceberg lettuce in the event of a surprise late frost.

USDA Zone Info for Fond Du Lac

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Fond Du Lac

You may be interested in your other planting guides for Fond Du Lac.