The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Sumner should be reviewed to figure out 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.

It's probably not a good idea to plant trachelium until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant trachelium in Sumner 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 fully mature. If you are starting your trachelium indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

The average date of last frost is March 15 in Sumner. It might get as low as 15°F during the coldest months of winter.

Since the USDA zone info for Sumner is an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Sumner it frosts late in the year after March 15 be ready to protect your trachelium if you have a surprise late frost.

USDA Zone Info for Sumner

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°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 20°F.

Plants to Grow in Sumner

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