One of the best tools that you have as gardeners to help us determine your gardening schedule is the 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.

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

Planting Calendar for Streptocarpella

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

Since streptocarpella are not cold tolerant you need to wait until after the last frost has passed before you can plant them.

The earliest that you can plant streptocarpella in Carthage 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. You probably don't want to wait any later than that or else your streptocarpella may not have a chance to grow to maturity. If you are starting your streptocarpella indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

The average date of last frost is March 15 in Carthage. You can expect an average low temperature of 10°F in the coldest months of winter.

Keep in mind that the actual date of last frost is not always accurate because it is based on the USDA zone info for Carthage and it can change quite a bit from year to year. Half of the time in Carthage it frosts late in the year after March 15 so make sure that you are prepared to protect your streptocarpella in the event of a surprise late frost.

USDA Zone Info for Carthage

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°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 15°F.

Plants to Grow in Carthage

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