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.

In Sunnyvale you can figure out when you can plant tritoma by looking at the USDA zone info.

Planting Calendar for Tritoma

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

You can plant tritoma much earlier in the year because they are one of those plants that can tolerate quite a bit of cold weather.

The earliest that you can plant tritoma in Sunnyvale 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 tritoma and expect a good harvest is probably September. If you wait any later than that and your tritoma may not have a chance to fully mature. If you are starting your tritoma indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is March 15 in Sunnyvale. It might get as low as 10°F during the coldest months of winter.

Since the USDA zone info for Sunnyvale may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in Sunnyvale there is a last frost after March 15 be ready to protect your tritoma if you have one of those late frosts.

USDA Zone Info for Sunnyvale

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.

Plants to Grow in Sunnyvale

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