One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Lake Forest you can estimate when you can plant iceberg lettuce by checking out the USDA zone info.

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 are barely cold tolerant you can plant them just a tiny bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant iceberg lettuce in Lake Forest is February. However, you really should wait until March 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 September. 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 January 31 in Lake Forest. It might get as low as 30°F during the coldest months of winter.

It's important to remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Lake Forest and it can change quite a bit from year to year. Since half of the time in Lake Forest you get surprised by a frost after January 31 be ready to cover your iceberg lettuce if you have a late frost.

USDA Zone Info for Lake Forest

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Lake Forest

You may be interested in your other planting guides for Lake Forest.