Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A common way of determining when to plant black eyed susans is to consult the USDA zone info for Salt Lake City.

Planting Calendar for Black Eyed Susans

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

Black Eyed Susans do not do well in cold weather which tells us that you have 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 Salt Lake City is April. However, you really should wait until May 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 August. 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

On average the last frost has passed is on April 15 in Salt Lake City. It might get as low as 5°F during the coldest months of winter.

It's important to remember that USDA zone info for Salt Lake City may not be accurate from year to year and the actual date of last frost is different every year. Since half of the time in Salt Lake City you get a frost after April 15 be ready to protect your black eyed susans in the event of one of those late frosts.

USDA Zone Info for Salt Lake City

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Salt Lake City

You may be interested in your other planting guides for Salt Lake City.