One of the first steps you take when you are figuring out 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.

One way of getting a good idea when to plant cosmos is to check out the USDA zone info for Mount Pleasant.

Planting Calendar for Cosmos

Frost tolerance for cosmos:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Cosmos tend to make it in very little cold which tells us that you can plant them slightly earlier in the year than other frost tender plants.

The earliest that you can plant cosmos in Mount Pleasant 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 cosmos and expect a good harvest is probably August. If you wait any later than that and your cosmos may not have a chance to fully mature. Starting your cosmos indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

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

It's important to remember that USDA zone info for Mount Pleasant is just an average and the actual date of last frost will vary from year to year. Since half of the time in Mount Pleasant it frosts late in the year after March 15 be ready to cover your cosmos if you have a late frost.

USDA Zone Info for Mount Pleasant

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 Mount Pleasant

You may be interested in your other planting guides for Mount Pleasant.