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.

You can estimate when it's a good idea to plant missouri primrose in La Mesa by referring to the USDA zone info.

Planting Calendar for Missouri Primrose

Frost tolerance for missouri primrose:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since missouri primrose do well in moderate cold you can plant them a little earlier in the year than other plants that might not handle the cold.

The earliest that you can plant missouri primrose in La Mesa 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 missouri primrose and expect a good harvest is probably October. Any later than that and your missouri primrose may not have a chance to grow to maturity. Starting your missouri primrose indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is January 31 in La Mesa. You should expect an average low temperature of 30°F in the coldest months of winter.

Since the USDA zone info for La Mesa is not always accurate the actual date of last frost is different every year. Half of the time in La Mesa it frosts late in the year after January 31 so just be sure to be ready to protect your missouri primrose in the event of a surprise late frost.

USDA Zone Info for La Mesa

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 La Mesa

You may be interested in your other planting guides for La Mesa.