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 South Pasadena you can estimate when it's a good idea to plant black eyed susans by checking out the USDA zone info.

Planting Calendar for Black Eyed Susans

Frost tolerance for black eyed susans:	Not tolerant of frost.
When to plant:	After the last frost has passed.

It's not a good idea to plant black eyed susans until after the last frost because they require warm weather.

The earliest that you can plant black eyed susans 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 black eyed susans and expect a good harvest is probably September. Any later than that and your black eyed susans may not have a chance to grow to maturity. If you are starting your black eyed susans indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is January 31 in South Pasadena. In the coldest months of winter you can expect an average low temperature of 30°F.

Since the USDA zone info for South Pasadena is an average the actual date of last frost will vary from year to year. Since half of the time in South Pasadena last frost occurs after January 31 be ready to protect your black eyed susans in the event of a 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.