One of the first steps you take when you are determining your gardening schedule is find your 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.

By referring to the USDA zone info for Pasadena it's possible to figure out when it's possible to plant asparagus fern.

Planting Calendar for Asparagus Fern

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

It's probably not a good idea to plant asparagus fern until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant asparagus 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 asparagus fern and expect a good harvest is probably September. If you wait any later than that and your asparagus fern may not have a chance to fully mature. You can get started a little bit earlier by starting your asparagus fern indoors.

Last Frost Date

On average all chance of frost has passed is on February 15 in Pasadena. It might get as low as 20°F during the coldest months of winter.

Remember that the actual date of last frost is just an average because it is based on the USDA zone info for Pasadena and it is different every year. Half of the time in Pasadena it frosts late in the year after February 15 so make sure that you are ready to cover your asparagus fern if you have a surprise 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.