The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Yuma you can figure out when it's possible to plant romaine lettuce by looking at the USDA zone info.

Planting Calendar for Romaine lettuce

Frost tolerance for romaine lettuce:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Romaine lettuce do well in pretty solid cold which tells us that you can plant them much earlier in the year than more sensitive plants.

The earliest that you can plant romaine lettuce in Yuma is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant romaine lettuce and expect a good harvest is probably October. Any later than that and your romaine lettuce may not have a chance to really do well. You can get started a little bit earlier by starting your romaine lettuce indoors.

Last Frost Date

The average date of last frost is January 31 in Yuma. In the coldest months of winter you can expect an average low temperature of 30°F.

Just be sure to remember that USDA zone info for Yuma may not be accurate from year to year and the actual date of last frost changes from year to year. Since half of the time in Yuma it frosts late in the year after January 31 be ready to cover your romaine lettuce if you have one of those late frosts.

USDA Zone Info for Yuma

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 Yuma

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