Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Windsor you can estimate when to plant flowering kale by checking out the USDA zone info.

Planting Calendar for Flowering Kale

Frost tolerance for flowering kale:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since flowering kale do well in moderate cold you can plant them just a bit earlier in the year than other frost tender plants.

The earliest that you can plant flowering kale in Windsor is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant flowering kale and expect a good harvest is probably October. You probably don't want to wait any later than that or else your flowering kale may not have a chance to really do well. Starting your flowering kale indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Windsor the average date of last frost happens on February 15. In the coldest months of winter you should expect an average low temperature of 25°F.

Just be sure to remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Windsor and it 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 cover your flowering kale in the event of one of those late frosts.

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.