One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first opportunity to plant anise in Petaluma can be determined by checking out the USDA zone info.

Planting Calendar for Anise

Frost tolerance for anise:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Since anise are one of those plants that can tolerate a tiny bit of cold weather you can plant them a bit earlier in the year than more sensitive plants.

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

Last Frost Date

In Petaluma the average date of last frost happens on February 15. In the coldest months of winter you should expect an average low temperature of 25°F.

Since the USDA zone info for Petaluma may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Petaluma you get a frost after February 15 so make sure that you are ready to cover your anise in the event of one of those late frosts.

USDA Zone Info for Petaluma

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 Petaluma

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