One of the first steps you take when you are determining your gardening schedule is find your 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 earliest that you can plant scarlet pimpernels in Macomb can be determined 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.

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

The earliest that you can plant scarlet pimpernels in Macomb 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 really do well. You can get started a couple of weeks earlier by starting your scarlet pimpernels indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Macomb. It might get as low as -15°F during the coldest months of winter.

Remember that USDA zone info for Macomb may not be accurate from year to year and the actual date of last frost changes from year to year. Since half of the time in Macomb there is a last frost after April 15 be ready to cover your scarlet pimpernels if you have a surprise late frost.

USDA Zone Info for Macomb

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°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 -10°F.

Plants to Grow in Macomb

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