The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A common way of determining when it's a good idea to plant dallas fern is to refer to the USDA zone info for Healdsburg.

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.

Since dallas fern require warm weather it's necessary to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant dallas fern in Healdsburg 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. You probably don't want to wait any later than that or else 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 little bit earlier.

Last Frost Date

The average date of last frost is February 15 in Healdsburg. In the coldest months of winter you should expect an average low temperature of 25°F.

Since the USDA zone info for Healdsburg is not always accurate the actual date of last frost will vary from year to year. Since half of the time in Healdsburg it frosts late in the year after February 15 be ready to cover your dallas fern if you have a late frost.

USDA Zone Info for Healdsburg

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 Healdsburg

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