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.

It's possible to estimate when it's possible to plant alternaria by using the USDA zone info for South Pasadena.

Planting Calendar for Alternaria

Frost tolerance for alternaria:	Not tolerant of frost.
When to plant:	After the last frost.

Since alternaria are not cold tolerant you must wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant alternaria in South Pasadena is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant alternaria and expect a good harvest is probably September. Any later than that and your alternaria may not have a chance to really do well. You can get started a little bit earlier by starting your alternaria indoors.

Last Frost Date

In South Pasadena the average date of last frost happens on January 31. It might get as low as 30°F during the coldest months of winter.

Since the USDA zone info for South Pasadena is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in South Pasadena you get surprised by a frost after January 31 so make sure that you are ready to protect your alternaria if you have a surprise late frost.

USDA Zone Info for South Pasadena

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in South Pasadena

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