One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of figuring out when to plant napa valley fern is to examine the USDA zone info for Plover.

Planting Calendar for Napa Valley Fern

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

Since napa valley fern require warm weather you really should wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant napa valley fern in Plover is May. However, you really should wait until June 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. If you are starting your napa valley 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 May 15 in Plover. You can expect an average low temperature of -25°F in the coldest months of winter.

Since the USDA zone info for Plover is not always accurate the actual date of last frost will vary from year to year. Since half of the time in Plover there is a last frost after May 15 be ready to protect your napa valley fern in the event of a surprise late frost.

USDA Zone Info for Plover

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°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 -20°F.

Plants to Grow in Plover

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