Before planting it is a good idea to find your USDA Zone info to figure out 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 estimate when you can plant trachelium by checking out the USDA zone info for Blackfoot.

Planting Calendar for Trachelium

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

Trachelium do not do well in cold weather which means that you really should wait until it warms up after the last frost before you can plant them.

The earliest that you can plant trachelium in Blackfoot 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. You probably don't want to wait any later than that or else your trachelium may not have a chance to really do well. Starting your trachelium indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Blackfoot. You should expect an average low temperature of -15°F in the coldest months of winter.

Keep in mind that USDA zone info for Blackfoot may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Blackfoot it frosts late in the year after April 15 so always be ready to protect your trachelium in the event of a late frost.

USDA Zone Info for Blackfoot

Here is the info for USDA Zone 5b.

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

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Blackfoot

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