One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. 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 North Charleston it's a good idea to figure out when it's possible to plant dianthus.

Planting Calendar for Dianthus

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

Dianthus tend to make it in a little bit of cold which tells us that you can plant them a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant dianthus in North 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 dianthus and expect a good harvest is probably September. If you wait any later than that and your dianthus may not have a chance to fully mature. Starting your dianthus indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is March 15 in North Charleston. It might get as low as 15°F during the coldest months of winter.

Since the USDA zone info for North Charleston is an average the actual date of last frost can change quite a bit from year to year. Since half of the time in North Charleston you get surprised by a frost after March 15 be ready to cover your dianthus in the event of one of those late frosts.

USDA Zone Info for North Charleston

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in North Charleston

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