Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Pomona you can determine when it's possible to plant black eyed susans by using 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.

Since black eyed susans are not cold tolerant you need to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant black eyed susans in Pomona 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. If you wait any later than that and your black eyed susans may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your black eyed susans indoors.

Last Frost Date

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

Always keep in mind that USDA zone info for Pomona may not be accurate from year to year and the actual date of last frost changes from year to year. Since half of the time in Pomona last frost occurs after January 31 be ready to protect your black eyed susans if you have a late frost.

USDA Zone Info for Pomona

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 Pomona

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