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 best time to plant nierembergia in Midlothian can be estimated by reviewing the USDA zone info.

Planting Calendar for Nierembergia

Frost tolerance for nierembergia:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's a bad idea to plant nierembergia until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant nierembergia in Midlothian is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant nierembergia and expect a good harvest is probably August. Any later than that and your nierembergia may not have a chance to really do well. You can get started a little bit earlier by starting your nierembergia indoors.

Last Frost Date

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

Since the USDA zone info for Midlothian is not always accurate the actual date of last frost is different every year. Half of the time in Midlothian it frosts late in the year after April 15 so be sure to be ready to cover your nierembergia if you have a late frost.

USDA Zone Info for Midlothian

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 Midlothian

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