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 tritoma by using the USDA zone info for Porterville.

Planting Calendar for Tritoma

Frost tolerance for tritoma:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Tritoma are one of those plants that can tolerate quite a bit of cold weather which means that you can plant them a quite a bit earlier than other plants that might not handle the cold.

The earliest that you can plant tritoma in Porterville is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant tritoma and expect a good harvest is probably October. You probably don't want to wait any later than that or else your tritoma may not have a chance to grow to maturity. Starting your tritoma indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is February 15 in Porterville. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Porterville is not always accurate the actual date of last frost can change quite a bit from year to year. Since half of the time in Porterville you get surprised by a frost after February 15 be ready to cover your tritoma in the event of a late frost.

USDA Zone Info for Porterville

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Porterville

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