Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In San Jose you can determine when it's a good idea to plant evolvulus by looking at the USDA zone info.

Planting Calendar for Evolvulus

Frost tolerance for evolvulus:	Not tolerant of frost.
When to plant:	After the last frost.

Since evolvulus do not do well in cold weather you have to wait until after the last frost has passed before you can plant them.

The earliest that you can plant evolvulus in San Jose 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 evolvulus and expect a good harvest is probably September. You probably don't want to wait any later than that or else your evolvulus may not have a chance to grow to maturity. If you are starting your evolvulus indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

In San Jose the average date of last frost happens on February 15. You should expect an average low temperature of 25°F in the coldest months of winter.

Just be sure to remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for San Jose and it is different every year. Half of the time in San Jose last frost occurs after February 15 so make sure that you are prepared to cover your evolvulus in the event of a late frost.

USDA Zone Info for San Jose

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 San Jose

You may be interested in your other planting guides for San Jose.