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.

A common way of determining when it's possible to plant nierembergia is to check out the USDA zone info for Germantown.

Planting Calendar for Nierembergia

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

Since nierembergia do not do well in cold weather you need to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant nierembergia in Germantown 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. If you wait 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 has passed is on April 15 in Germantown. You can expect an average low temperature of -20°F in the coldest months of winter.

Always keep in mind that USDA zone info for Germantown is an average and the actual date of last frost will vary from year to year. Half of the time in Germantown there is a last frost after April 15 so always be ready to protect your nierembergia in the event of a late frost.

USDA Zone Info for Germantown

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

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

Plants to Grow in Germantown

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