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 USDA zone info for Mercedes can be read to determine when it's the best time to plant scarlet pimpernels.

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.

Since scarlet pimpernels do ok in moderate cold you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant scarlet pimpernels in Mercedes 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. If you wait any later than that and your scarlet pimpernels may not have a chance to fully mature. You can get started a little bit earlier by starting your scarlet pimpernels indoors.

Last Frost Date

In Mercedes the average date of last frost happens on February 15. In the coldest months of winter you can expect an average low temperature of 25°F.

Since the USDA zone info for Mercedes may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in Mercedes you get a frost after February 15 be ready to protect your scarlet pimpernels in the event of one of those late frosts.

USDA Zone Info for Mercedes

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 Mercedes

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