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 a good idea to plant dallas fern in Sonoma by reviewing the USDA zone info.

Planting Calendar for Dallas Fern

Frost tolerance for dallas fern:	Not tolerant of frost.
When to plant:	After the last frost.

Since dallas fern require warm weather it's necessary to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant dallas fern in Sonoma is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant dallas fern and expect a good harvest is probably September. If you wait any later than that and your dallas fern may not have a chance to really do well. If you are starting your dallas fern indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on February 15 in Sonoma. It might get as low as 25°F during the coldest months of winter.

Always keep in mind that USDA zone info for Sonoma may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Since half of the time in Sonoma there is a last frost after February 15 be ready to cover your dallas fern in the event of a late frost.

USDA Zone Info for Sonoma

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 Sonoma

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