Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Alsip you can figure out when it's the best time to plant nierembergia by checking out 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.

Nierembergia are not cold tolerant which means that you need to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant nierembergia in Alsip 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. You probably don't want to wait any later than that or else your nierembergia may not have a chance to really do well. If you are starting your nierembergia indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Alsip. In the coldest months of winter you should expect an average low temperature of -10°F.

Since the USDA zone info for Alsip may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Alsip it frosts late in the year after April 15 be ready to protect your nierembergia if you have a surprise late frost.

USDA Zone Info for Alsip

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 Alsip

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