One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's possible to figure out when to plant catharanthus by looking at the USDA zone info for Greenwood.

Planting Calendar for Catharanthus

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

Since catharanthus require warm weather you have to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant catharanthus in Greenwood 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. 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 March 15 in Greenwood. In the coldest months of winter you can expect an average low temperature of 10°F.

Keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Greenwood and it will vary from year to year. Half of the time in Greenwood it frosts late in the year after March 15 so always be ready to cover your catharanthus if you have a late frost.

USDA Zone Info for Greenwood

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 Greenwood

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