Before planting it is a good idea to find your USDA Zone info to determine 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 USDA zone info for Ballwin should be used to figure out when you can plant nemesia.

Planting Calendar for Nemesia

Frost tolerance for nemesia:	Not tolerant of frost.
When to plant:	After the last frost.

It's probably a bad idea to plant nemesia until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant nemesia in Ballwin 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 nemesia and expect a good harvest is probably August. Any later than that and your nemesia may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your nemesia indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Ballwin. You can expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Ballwin is just an average the actual date of last frost is different every year. Half of the time in Ballwin last frost occurs after April 15 so just be sure to be ready to protect your nemesia in the event of a late frost.

USDA Zone Info for Ballwin

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Ballwin

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