Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You should be able to determine when it's possible to plant cleome by using the USDA zone info for Montpelier.

Planting Calendar for Cleome

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

Cleome require warm weather which means that it's important to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant cleome in Montpelier is May. However, you really should wait until June 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. You probably don't want to wait any later than that or else your cleome may not have a chance to really do well. You can get started a few weeks earlier by starting your cleome indoors.

Last Frost Date

On average the last frost is on May 15 in Montpelier. You can expect an average low temperature of -25°F in the coldest months of winter.

Since the USDA zone info for Montpelier may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Montpelier it frosts late in the year after May 15 so always be ready to protect your cleome if you have a late frost.

USDA Zone Info for Montpelier

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

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

Plants to Grow in Montpelier

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