The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can figure out when it's possible to plant trachelium in National City by checking out the USDA zone info.

Planting Calendar for Trachelium

Frost tolerance for trachelium:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Since trachelium do not do well in cold weather you really should wait until after the last frost has passed before you can plant them.

The earliest that you can plant trachelium in National City is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant trachelium and expect a good harvest is probably September. Any later than that and your trachelium may not have a chance to really do well. You can get started a few weeks earlier by starting your trachelium indoors.

Last Frost Date

The average date of last frost is January 31 in National City. It might get as low as 35°F during the coldest months of winter.

Always keep in mind that USDA zone info for National City is just an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in National City you get surprised by a frost after January 31 be ready to cover your trachelium in the event of a late frost.

USDA Zone Info for National City

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	35°F
Highest Expected Low	40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in National City

You may be interested in your other planting guides for National City.