The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A way of determining when it's possible to plant trachelium is to use the USDA zone info for Grafton.

Planting Calendar for Trachelium

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

Trachelium require warm weather which tells us that it is important to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant trachelium in Grafton 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 trachelium and expect a good harvest is probably August. If you wait any later than that and your trachelium may not have a chance to grow to maturity. Starting your trachelium 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 Grafton. You can expect an average low temperature of -10°F in the coldest months of winter.

Keep in mind that USDA zone info for Grafton is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in Grafton you get surprised by a frost after April 15 be ready to cover your trachelium in the event of a late frost.

USDA Zone Info for Grafton

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Grafton

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