One of the first steps you take when you are getting a good idea 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.

You should be able to figure out when it's possible to plant trachelium by using the USDA zone info for Merced.

Planting Calendar for Trachelium

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

You should not plant trachelium until after all chance of frost has passed because they require warm weather.

The earliest that you can plant trachelium in Merced is March. However, you really should wait until April 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 grow to maturity. You can get started a little bit earlier by starting your trachelium indoors.

Last Frost Date

On average the last frost has passed is on February 15 in Merced. It might get as low as 20°F during the coldest months of winter.

Since the USDA zone info for Merced may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Merced it frosts late in the year after February 15 be ready to cover your trachelium in the event of a surprise late frost.

USDA Zone Info for Merced

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°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 25°F.

Plants to Grow in Merced

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