Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of estimating when to plant black eyed susans is to look at the USDA zone info for Windsor.

Planting Calendar for Black Eyed Susans

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

Black Eyed Susans are not cold tolerant which tells us that you must wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant black eyed susans in Windsor is March. However, you really should wait until April 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 September. You probably don't want to wait any later than that or else your black eyed susans may not have a chance to grow to maturity. Starting your black eyed susans indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is February 15 in Windsor. You should expect an average low temperature of 25°F in the coldest months of winter.

Keep in mind that USDA zone info for Windsor is an average and the actual date of last frost will vary from year to year. Half of the time in Windsor you get a frost after February 15 so make sure that you are prepared to protect your black eyed susans if you have a late frost.

USDA Zone Info for Windsor

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Windsor

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