Before planting it is a good idea to find your USDA Zone info to figure out 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 earliest that you can plant streptocarpella in Collinsville can be estimated by using the USDA zone info.

Planting Calendar for Streptocarpella

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

You really shouldn't plant streptocarpella until after the last frost when the weather gets warmer because they do not do well in cold weather.

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

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Collinsville. You should expect an average low temperature of -5°F in the coldest months of winter.

Since the USDA zone info for Collinsville is not always accurate the actual date of last frost changes from year to year. Since half of the time in Collinsville it frosts late in the year after April 15 be ready to protect your streptocarpella in the event of a late frost.

USDA Zone Info for Collinsville

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Collinsville

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