Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By using the USDA zone info for Portage you should be able to determine when it's a good idea to plant trachelium.

Planting Calendar for Trachelium

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

You should not plant trachelium until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant trachelium in Portage 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. Any later than that and your trachelium may not have a chance to really do well. Starting your trachelium indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Portage. It might get as low as -20°F during the coldest months of winter.

Remember that USDA zone info for Portage may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in Portage last frost occurs after April 15 be ready to cover your trachelium if you have one of those late frosts.

USDA Zone Info for Portage

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Portage

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