One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first opportunity to plant black eyed susans in Colton can be determined by reviewing the USDA zone info.

Planting Calendar for Black Eyed Susans

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

Black Eyed Susans are not cold tolerant which means that it's important to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant black eyed susans in Colton 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 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. You can get started a little bit earlier by starting your black eyed susans indoors.

Last Frost Date

The average date of last frost is February 15 in Colton. It might get as low as 25°F during the coldest months of winter.

Keep in mind that the actual date of last frost is just an average because it is based on the USDA zone info for Colton and it changes from year to year. Since half of the time in Colton it frosts late in the year after February 15 be ready to protect your black eyed susans in the event of a surprise late frost.

USDA Zone Info for Colton

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Colton

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