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.

You can estimate when you can plant swan river daisy in Portola Valley by using the USDA zone info.

Planting Calendar for Swan River Daisy

Frost tolerance for swan river daisy:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since swan river daisy require warm weather it is important to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant swan river daisy in Portola Valley 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 swan river daisy and expect a good harvest is probably September. Any later than that and your swan river daisy may not have a chance to really do well. If you are starting your swan river daisy indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Portola Valley the average date of last frost happens on January 31. In the coldest months of winter you can expect an average low temperature of 30°F.

Keep in mind that the actual date of last frost is not always accurate because it is based on the USDA zone info for Portola Valley and it is different every year. Half of the time in Portola Valley you get a frost after January 31 so always be ready to cover your swan river daisy in the event of one of those late frosts.

USDA Zone Info for Portola Valley

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Portola Valley

You may be interested in your other planting guides for Portola Valley.