One of the first steps you take when you are estimating 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.

The USDA zone info for Lawrenceburg can be used to determine when you can plant catharanthus.

Planting Calendar for Catharanthus

Frost tolerance for catharanthus:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Since catharanthus require warm weather you need 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 Lawrenceburg 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 grow to maturity. If you are starting your catharanthus indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Lawrenceburg. In the coldest months of winter you can expect an average low temperature of -10°F.

Since the USDA zone info for Lawrenceburg is not always accurate the actual date of last frost will vary from year to year. Half of the time in Lawrenceburg you get a frost after April 15 so be sure to be ready to cover your catharanthus if you have a surprise late frost.

USDA Zone Info for Lawrenceburg

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 Lawrenceburg

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