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.

You should be able to estimate when it's possible to plant catharanthus by referring to the USDA zone info for Thomasville.

Planting Calendar for Catharanthus

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

You can not plant catharanthus until after the last frost because they are not cold tolerant.

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

Last Frost Date

The average date of last frost is April 15 in Thomasville. In the coldest months of winter you can expect an average low temperature of 5°F.

Remember that USDA zone info for Thomasville is an average and the actual date of last frost is different every year. Since half of the time in Thomasville you get surprised by a frost after April 15 be ready to cover your catharanthus in the event of one of those late frosts.

USDA Zone Info for Thomasville

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°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 10°F.

Plants to Grow in Thomasville

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