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.

By referring to the USDA zone info for Zone 6a it's a good idea to determine when to plant flowering kale.

Planting Calendar for Flowering Kale

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

Flowering Kale are moderately cold tolerant which tells us that you can start planting them earlier than more sensitive plants.

The earliest that you can plant flowering kale in Zone 6a is February. However, you really should wait until March 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 September. If you wait any later than that and your flowering kale may not have a chance to grow to maturity. You can get started a little bit earlier by starting your flowering kale indoors.

Last Frost Date

On average the last frost is on April 15 in Zone 6a. You should expect an average low temperature of -10°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Zone 6a is just an average and the actual date of last frost will vary from year to year. Since half of the time in Zone 6a last frost occurs after April 15 be ready to protect your flowering kale if you have a late frost.

USDA Zone Info for Zone 6a

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Zone 6a

You may be interested in your other planting guides for Zone 6a.