One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Haddon Heights should be used to determine when to plant black eyed susans.

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.

You should not plant black eyed susans until after the last frost because they do not do well in cold weather.

The earliest that you can plant black eyed susans in Haddon Heights 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. You probably don't want to wait any later than that or else your black eyed susans may not have a chance to fully mature. You can get started a little bit earlier by starting your black eyed susans indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Haddon Heights. In the coldest months of winter you should expect an average low temperature of 0°F.

Just be sure to remember that USDA zone info for Haddon Heights is just an average and the actual date of last frost will vary from year to year. Since half of the time in Haddon Heights you get surprised by a frost after April 15 be ready to cover your black eyed susans if you have one of those late frosts.

USDA Zone Info for Haddon Heights

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Haddon Heights

You may be interested in your other planting guides for Haddon Heights.