One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You can figure out when it's possible to plant flowering tobacco in Portola Valley by checking out the USDA zone info.

Planting Calendar for Flowering Tobacco

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

It's probably not a good idea to plant flowering tobacco until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant flowering tobacco 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 flowering tobacco and expect a good harvest is probably September. Any later than that and your flowering tobacco may not have a chance to really do well. You can get started a few weeks earlier by starting your flowering tobacco indoors.

Last Frost Date

The average date of last frost is January 31 in Portola Valley. You should expect an average low temperature of 30°F in the coldest months of winter.

Always keep in mind that USDA zone info for Portola Valley is just an average and the actual date of last frost changes from year to year. Half of the time in Portola Valley you get a frost after January 31 so make sure that you are prepared to protect your flowering tobacco if you have a late frost.

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.