One of the best tools that you have as gardeners to help us estimate 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 chance to plant gazania in Petaluma can be figured out by looking at the USDA zone info.

Planting Calendar for Gazania

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

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

The earliest that you can plant gazania 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 gazania and expect a good harvest is probably September. If you wait any later than that and your gazania may not have a chance to really do well. Starting your gazania indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average all chance of frost has passed is on February 15 in Petaluma. You can expect an average low temperature of 25°F in the coldest months of winter.

Remember that USDA zone info for Petaluma is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Petaluma there is a last frost after February 15 so make sure that you are ready to protect your gazania 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.