One of the first steps you take when you are making a decision about 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.

By looking at the USDA zone info for Zone 1b it's possible to figure out when it's the best time to plant trachelium.

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 you really should wait until it warms up after all chance of frost has passed before you can plant them.

The earliest that you can plant trachelium in Zone 1b is June. However, you really should wait until July if you don't want to take any chances.

The last month that you can plant trachelium and expect a good harvest is probably July. If you wait any later than that and your trachelium may not have a chance to fully mature. Starting your trachelium indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is June 15 in Zone 1b. In the coldest months of winter you can expect an average low temperature of -55°F.

Since the USDA zone info for Zone 1b is just an average the actual date of last frost will vary from year to year. Half of the time in Zone 1b you get surprised by a frost after June 15 so be sure to be ready to protect your trachelium in the event of a late frost.

USDA Zone Info for Zone 1b

Here is the info for USDA Zone 1b.

Average Date of Last Frost (spring)	June 15
Average Date of First Frost (fall)	July 15
Lowest Expected Low	-55°F
Highest Expected Low	-50°F

This means that on a really cold year, the coldest it will get is -55°F. On most years you should be prepared to experience lows near -50°F.

Plants to Grow in Zone 1b

You may be interested in your other planting guides for Zone 1b.