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 Pasadena you can estimate when it's a good idea to plant napa valley fern by using 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 when the weather gets warmer.

Napa Valley Fern do not do well in cold weather which tells us that it is important to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant napa valley fern in Pasadena is March. However, you really should wait until April 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 September. If you wait 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 is on February 15 in Pasadena. You should expect an average low temperature of 20°F in the coldest months of winter.

Remember that USDA zone info for Pasadena is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in Pasadena it frosts late in the year after February 15 be ready to cover your napa valley fern in the event of a late frost.

USDA Zone Info for Pasadena

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Pasadena

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