One of the first steps you take when you are getting a good idea your gardening schedule is find your 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.

One way of figuring out when it's possible to plant napa valley fern is to refer to the USDA zone info for Kaplan.

Planting Calendar for Napa Valley Fern

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

You can not plant napa valley fern until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant napa valley fern in Kaplan 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 napa valley fern and expect a good harvest is probably September. You probably don't want to wait any later than that or else your napa valley fern may not have a chance to fully mature. You can get started a little bit earlier by starting your napa valley fern indoors.

Last Frost Date

In Kaplan the average date of last frost happens on February 15. You can expect an average low temperature of 20°F in the coldest months of winter.

Keep in mind that the actual date of last frost is just an average because it is based on the USDA zone info for Kaplan and it can change quite a bit from year to year. Half of the time in Kaplan it frosts late in the year after February 15 so always be ready to cover your napa valley fern in the event of a late frost.

USDA Zone Info for Kaplan

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Kaplan

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