One of the first steps you take when you are figuring out 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 can determine when it's possible to plant mecardonia in Charleston by referring to the USDA zone info.

Planting Calendar for Mecardonia

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

Since mecardonia require warm weather you really should wait until after all chance of frost has passed before you can plant them.

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

The last month that you can plant mecardonia and expect a good harvest is probably September. If you wait any later than that and your mecardonia may not have a chance to fully mature. If you are starting your mecardonia indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Charleston. It might get as low as 20°F during the coldest months of winter.

Remember that USDA zone info for Charleston may not be accurate from year to year and the actual date of last frost changes from year to year. Since half of the time in Charleston there is a last frost after February 15 be ready to protect your mecardonia if you have a surprise late frost.

USDA Zone Info for Charleston

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Charleston

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