The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Decatur you can estimate when it's the best time to plant napa valley fern by reviewing the USDA zone info.

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 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 Decatur 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 really do well. Starting your napa valley fern indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Decatur. In the coldest months of winter you can expect an average low temperature of -15°F.

Since the USDA zone info for Decatur may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Half of the time in Decatur it frosts late in the year after April 15 so make sure that you are prepared to protect your napa valley fern in the event of a late frost.

USDA Zone Info for Decatur

Here is the info for USDA Zone 5b.

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

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Decatur

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