One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. 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 Vandalia.

Planting Calendar for Trachelium

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

Since trachelium do not do well in cold weather you need to wait until after the last frost before you can plant them.

The earliest that you can plant trachelium in Vandalia 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. You can get started a couple of weeks earlier by starting your trachelium indoors.

Last Frost Date

The average date of last frost is April 15 in Vandalia. In the coldest months of winter you can expect an average low temperature of -10°F.

Since the USDA zone info for Vandalia is an average the actual date of last frost can change quite a bit from year to year. Half of the time in Vandalia last frost occurs after April 15 so be sure to be ready to protect your trachelium if you have a late frost.

USDA Zone Info for Vandalia

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 Vandalia

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