Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The earliest that you can plant scarlet pimpernels in Centralia 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.

Scarlet Pimpernels are barely cold tolerant which means that you can get them planted just a bit earlier than more sensitive plants.

The earliest that you can plant scarlet pimpernels in Centralia is March. However, you really should wait until April 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 August. You probably don't want to wait any later than that or else your scarlet pimpernels may not have a chance to grow to maturity. You can get started a little bit earlier by starting your scarlet pimpernels indoors.

Last Frost Date

The average date of last frost is March 15 in Centralia. In the coldest months of winter you can expect an average low temperature of 15°F.

Since the USDA zone info for Centralia is an average the actual date of last frost changes from year to year. Since half of the time in Centralia there is a last frost after March 15 be ready to cover your scarlet pimpernels in the event of a late frost.

USDA Zone Info for Centralia

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Centralia

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