Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Monongahela you can determine when to plant napa valley fern by referring to the USDA zone info.

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.

It's 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 Monongahela 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 really do well. Starting your napa valley fern indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Monongahela. In the coldest months of winter you can expect an average low temperature of -5°F.

Since the USDA zone info for Monongahela is not always accurate the actual date of last frost can change quite a bit from year to year. Half of the time in Monongahela last frost occurs after April 15 so be sure to be ready to cover your napa valley fern in the event of one of those late frosts.

USDA Zone Info for Monongahela

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Monongahela

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