The USDA Zone info is a great tool for gardeners to help us estimate 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.

One way of estimating when it's a good idea to plant nolana is to consult the USDA zone info for San Ramon.

Planting Calendar for Nolana

Frost tolerance for nolana:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Since nolana require warm weather you really should wait until after the last frost before you can plant them.

The earliest that you can plant nolana in San Ramon 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 nolana and expect a good harvest is probably September. You probably don't want to wait any later than that or else your nolana may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your nolana indoors.

Last Frost Date

On average the last frost has passed is on February 15 in San Ramon. It might get as low as 25°F during the coldest months of winter.

Always keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for San Ramon and it is different every year. Since half of the time in San Ramon last frost occurs after February 15 be ready to cover your nolana if you have one of those late frosts.

USDA Zone Info for San Ramon

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 Ramon

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