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

A common way of estimating when to plant black eyed susans is to consult the USDA zone info for Marshfield.

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.

It's a bad idea to plant black eyed susans until after the last frost when the weather gets warmer because they require warm weather.

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

Last Frost Date

In Marshfield the average date of last frost happens on April 15. It might get as low as -5°F during the coldest months of winter.

Since the USDA zone info for Marshfield is not always accurate the actual date of last frost will vary from year to year. Half of the time in Marshfield there is a last frost after April 15 so be sure to be ready to protect your black eyed susans if you have one of those late frosts.

USDA Zone Info for Marshfield

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 Marshfield

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