One of the first steps you take when you are making a decision about your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's possible to determine when you can plant trachelium by referring to the USDA zone info for Salem.

Planting Calendar for Trachelium

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

Since trachelium require warm weather you really should wait until after the last frost before you can plant them.

The earliest that you can plant trachelium in Salem 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 little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Salem. You should expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Salem is not always accurate the actual date of last frost will vary from year to year. Half of the time in Salem you get surprised by a frost after April 15 so always be ready to protect your trachelium if you have a surprise late frost.

USDA Zone Info for Salem

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 Salem

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