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.

You will be able to determine when it's the best time to plant flowering kale by referring to the USDA zone info for Bangor.

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 do well in moderate cold which tells us that you can plant them earlier than more sensitive plants.

The earliest that you can plant flowering kale in Bangor 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 few weeks earlier by starting your flowering kale indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Bangor. In the coldest months of winter you should expect an average low temperature of -20°F.

Just be sure to remember that USDA zone info for Bangor is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Bangor last frost occurs after April 15 so always be ready to cover your flowering kale in the event of a late frost.

USDA Zone Info for Bangor

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Bangor

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