One of the first steps you take when you are getting a good idea 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.

A common way of getting a good idea when you can plant cleome is to check out the USDA zone info for Charlestown.

Planting Calendar for Cleome

Frost tolerance for cleome:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's not a good idea to plant cleome until after the last frost has passed because they do not do well in cold weather.

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

The last month that you can plant cleome and expect a good harvest is probably August. Any later than that and your cleome may not have a chance to really do well. Starting your cleome indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Charlestown. In the coldest months of winter you should expect an average low temperature of -5°F.

Since the USDA zone info for Charlestown is not always accurate the actual date of last frost is different every year. Half of the time in Charlestown it frosts late in the year after April 15 so just be sure to be ready to cover your cleome if you have a late frost.

USDA Zone Info for Charlestown

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 Charlestown

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