Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Charles Town you can determine when to plant sweet williams by checking out the USDA zone info.

Planting Calendar for Sweet Williams

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

Since sweet williams are moderately cold tolerant you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant sweet williams in Charles Town 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 sweet williams and expect a good harvest is probably September. You probably don't want to wait any later than that or else your sweet williams may not have a chance to really do well. You can get started a little bit earlier by starting your sweet williams indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Charles Town. In the coldest months of winter you can expect an average low temperature of -5°F.

Since the USDA zone info for Charles Town is just an average the actual date of last frost is different every year. Since half of the time in Charles Town there is a last frost after April 15 be ready to cover your sweet williams in the event of one of those late frosts.

USDA Zone Info for Charles Town

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 Charles Town

You may be interested in your other planting guides for Charles Town.