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.

In Petaluma you can figure out when it's the best time to plant gloriosa daisy by reviewing the USDA zone info.

Planting Calendar for Gloriosa Daisy

Frost tolerance for gloriosa daisy:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since gloriosa daisy do well in moderate cold you can plant them a little earlier in the year than other frost tender plants.

The earliest that you can plant gloriosa daisy in Petaluma is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant gloriosa daisy and expect a good harvest is probably October. Any later than that and your gloriosa daisy may not have a chance to really do well. If you are starting your gloriosa daisy indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

The average date of last frost is February 15 in Petaluma. It might get as low as 25°F during the coldest months of winter.

It's important to remember that the actual date of last frost is an average because it is based on the USDA zone info for Petaluma and it can change quite a bit from year to year. Half of the time in Petaluma there is a last frost after February 15 so just be sure to be ready to protect your gloriosa daisy if you have a surprise late frost.

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.