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.

The first opportunity to plant flowering kale in Holly can be determined by looking at 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.

Flowering Kale are moderately cold tolerant which tells us that you can plant them earlier than plants that are more sensitive to the cold.

The earliest that you can plant flowering kale in Holly 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. You probably don't want to wait any later than that or else your flowering kale may not have a chance to grow to maturity. Starting your flowering kale indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Holly. In the coldest months of winter you should expect an average low temperature of -10°F.

Since the USDA zone info for Holly is not always accurate the actual date of last frost can change quite a bit from year to year. Since half of the time in Holly you get surprised by a frost after April 15 be ready to cover your flowering kale if you have one of those late frosts.

USDA Zone Info for Holly

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 Holly

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