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

One way of estimating when to plant napa valley fern is to examine the USDA zone info for Excelsior Springs.

Planting Calendar for Napa Valley Fern

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

It's probably a bad idea to plant napa valley fern until after the last frost when the weather gets warmer because they require warm weather.

The earliest that you can plant napa valley fern in Excelsior Springs 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. Any later than that and your napa valley fern may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your napa valley fern indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Excelsior Springs. It might get as low as -10°F during the coldest months of winter.

Remember that USDA zone info for Excelsior Springs is not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in Excelsior Springs last frost occurs after April 15 so always be ready to protect your napa valley fern in the event of a late frost.

USDA Zone Info for Excelsior Springs

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 Excelsior Springs

You may be interested in your other planting guides for Excelsior Springs.