The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of determining when to plant black eyed susans is to refer to the USDA zone info for Boonton.

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.

Since black eyed susans require warm weather it's important 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 Boonton 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

The average date of last frost is April 15 in Boonton. In the coldest months of winter you can expect an average low temperature of -5°F.

Since the USDA zone info for Boonton is not always accurate the actual date of last frost will vary from year to year. Since half of the time in Boonton you get surprised by a frost after April 15 be ready to cover your black eyed susans in the event of one of those late frosts.

USDA Zone Info for Boonton

Here is the info for USDA Zone 6b.

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

Plants to Grow in Boonton

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