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.

The best time to plant iceberg lettuce in Davis should be determined by using 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 a bit earlier in the year than more sensitive plants.

The earliest that you can plant iceberg lettuce in Davis 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. 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

The average date of last frost is February 15 in Davis. It might get as low as 25°F during the coldest months of winter.

Always keep in mind that USDA zone info for Davis is not always accurate and the actual date of last frost changes from year to year. Half of the time in Davis last frost occurs after February 15 so make sure that you are ready to protect your iceberg lettuce in the event of a late frost.

USDA Zone Info for Davis

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 Davis

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