The USDA Zone info is a great tool for gardeners to help us determine 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.

By referring to the USDA zone info for Los Alamitos you will be able to determine when it's a good idea to plant watercress.

Planting Calendar for Watercress

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

Watercress can survive in some cold which tells us that you can plant them slightly earlier in the year than more sensitive plants.

The earliest that you can plant watercress in Los Alamitos 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 watercress and expect a good harvest is probably September. If you wait any later than that and your watercress may not have a chance to grow to maturity. Starting your watercress indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Los Alamitos the average date of last frost happens on January 31. You can expect an average low temperature of 35°F in the coldest months of winter.

Keep in mind that USDA zone info for Los Alamitos is just an average and the actual date of last frost will vary from year to year. Half of the time in Los Alamitos you get a frost after January 31 so always be ready to cover your watercress in the event of a surprise late frost.

USDA Zone Info for Los Alamitos

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	35°F
Highest Expected Low	40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in Los Alamitos

You may be interested in your other planting guides for Los Alamitos.