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

In Carlinville you can figure out when it's the best time to plant impatiens by checking out the USDA zone info.

Planting Calendar for Impatiens

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

You can not plant impatiens until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant impatiens in Carlinville 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 impatiens and expect a good harvest is probably August. If you wait any later than that and your impatiens may not have a chance to fully mature. If you are starting your impatiens indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

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

Remember that USDA zone info for Carlinville is an average and the actual date of last frost changes from year to year. Half of the time in Carlinville you get surprised by a frost after April 15 so always be ready to cover your impatiens in the event of a late frost.

USDA Zone Info for Carlinville

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 Carlinville

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