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When to Plant Flowering Kale in Richland Center, WI

One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By looking at the USDA zone info for Richland Center you will be able to figure out when you can 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 one of those plants that can tolerate a little bit of cold weather which tells us that you can get them planted earlier than other frost tender plants.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant flowering kale
Possibly ok, but a risky time to plant flowering kale
Probably not a good time to plant flowering kale

The earliest that you can plant flowering kale in Richland Center 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 flowering kale and expect a good harvest is probably August. 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. You can get started a little bit earlier by starting your flowering kale indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on May 15 in Richland Center. You should expect an average low temperature of -25°F in the coldest months of winter.

Since the USDA zone info for Richland Center may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Richland Center there is a last frost after May 15 so be sure to be ready to cover your flowering kale in the event of a late frost.

USDA Zone Info for Richland Center

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)September 15
Lowest Expected Low-25°F
Highest Expected Low-20°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 -20°F.

Plants to Grow in Richland Center

You may be interested in your other planting guides for Richland Center.