One of the best tools that you have as gardeners to help us determine 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.

A common way of making a decision about when to plant napa valley fern is to examine the USDA zone info for Fairmont.

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.

It's probably not a good idea to plant napa valley fern until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant napa valley fern in Fairmont 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. If you wait any later than that and your napa valley fern may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your napa valley fern indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Fairmont. You should expect an average low temperature of -20°F in the coldest months of winter.

It's important to remember that USDA zone info for Fairmont may not be accurate from year to year and the actual date of last frost changes from year to year. Since half of the time in Fairmont last frost occurs after April 15 be ready to cover your napa valley fern in the event of one of those late frosts.

USDA Zone Info for Fairmont

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°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 -15°F.

Plants to Grow in Fairmont

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