One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The best time to plant scarlet pimpernels in La Mesa can be figured out by reviewing the USDA zone info.

Planting Calendar for Scarlet Pimpernels

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

You can plant scarlet pimpernels a bit earlier in the year because they are one of those plants that can tolerate a tiny bit of cold weather.

The earliest that you can plant scarlet pimpernels in La Mesa 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 scarlet pimpernels and expect a good harvest is probably September. Any later than that and your scarlet pimpernels may not have a chance to really do well. Starting your scarlet pimpernels indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is January 31 in La Mesa. 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 La Mesa is just an average and 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 make sure that you are prepared to cover your scarlet pimpernels in the event of a 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.