Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. 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 determining when it's a good idea to plant napa valley fern is to check out the USDA zone info for Bolivar.

Planting Calendar for Napa Valley Fern

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

Since napa valley fern are not cold tolerant it's important to wait until after the last frost has passed before you can plant them.

The earliest that you can plant napa valley fern in Bolivar is April. However, you really should wait until May 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 August. 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 few weeks earlier by starting your napa valley fern indoors.

Last Frost Date

On average the last frost is on April 15 in Bolivar. You should expect an average low temperature of -10°F in the coldest months of winter.

Remember that the actual date of last frost is just an average because it is based on the USDA zone info for Bolivar and it changes from year to year. Since half of the time in Bolivar it frosts late in the year after April 15 be ready to cover your napa valley fern if you have a surprise late frost.

USDA Zone Info for Bolivar

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Bolivar

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