One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Rohnert Park should be reviewed to determine when it's the best time to plant dallas fern.

Planting Calendar for Dallas Fern

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

It's probably not a good idea to plant dallas fern until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant dallas fern in Rohnert Park 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. Any later than that and your dallas fern may not have a chance to grow to maturity. Starting your dallas fern indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Rohnert Park the average date of last frost happens on February 15. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Rohnert Park is an average the actual date of last frost changes from year to year. Half of the time in Rohnert Park you get a frost after February 15 so just be sure to be ready to cover your dallas fern in the event of one of those late frosts.

USDA Zone Info for Rohnert Park

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 Rohnert Park

You may be interested in your other planting guides for Rohnert Park.