The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. 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 Williamsport should be read to figure out when it's possible 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.

It's probably not a good idea to plant black eyed susans until after the last frost because they are not cold tolerant.

The earliest that you can plant black eyed susans in Williamsport 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 really do well. If you are starting your black eyed susans indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Williamsport. You can expect an average low temperature of -5°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Williamsport may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in Williamsport you get surprised by a frost after April 15 be ready to cover your black eyed susans in the event of a late frost.

USDA Zone Info for Williamsport

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 Williamsport

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