The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By using the USDA zone info for Charleston you should be able to figure out when it's the best time to plant lunaria.

Planting Calendar for Lunaria

Frost tolerance for lunaria:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Lunaria can survive in mild cold which tells us that you can plant them just a bit earlier in the year than other frost tender plants.

The earliest that you can plant lunaria in Charleston is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant lunaria and expect a good harvest is probably September. You probably don't want to wait any later than that or else your lunaria may not have a chance to grow to maturity. You can get started a little bit earlier by starting your lunaria indoors.

Last Frost Date

The average date of last frost is April 15 in Charleston. You should expect an average low temperature of -5°F in the coldest months of winter.

Since the USDA zone info for Charleston is not always accurate the actual date of last frost will vary from year to year. Since half of the time in Charleston you get a frost after April 15 be ready to protect your lunaria in the event of a surprise late frost.

USDA Zone Info for Charleston

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 Charleston

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