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.

You should be able to estimate when it's the best time to plant napa valley fern by reviewing the USDA zone info for Warren.

Planting Calendar for Napa Valley Fern

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

Since napa valley fern do not do well in cold weather it is necessary to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant napa valley fern in Warren 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. Starting your napa valley fern indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in Warren. It might get as low as 10°F during the coldest months of winter.

Keep in mind that USDA zone info for Warren is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Warren it frosts late in the year after March 15 so make sure that you are ready to cover your napa valley fern in the event of one of those late frosts.

USDA Zone Info for Warren

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°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 15°F.

Plants to Grow in Warren

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