Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of figuring out when it's a good idea to plant kale is to use the USDA zone info for Stewartville.

Planting Calendar for Kale

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

Kale do well in moderate cold which tells us that you can plant them a little bit earlier than other frost tender plants.

The earliest that you can plant kale in Stewartville 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 kale and expect a good harvest is probably August. You probably don't want to wait any later than that or else your kale may not have a chance to fully mature. Starting your kale indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost is on May 15 in Stewartville. In the coldest months of winter you can expect an average low temperature of -25°F.

Since the USDA zone info for Stewartville is not always accurate the actual date of last frost is different every year. Half of the time in Stewartville there is a last frost after May 15 so make sure that you are ready to cover your kale if you have one of those late frosts.

USDA Zone Info for Stewartville

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 Stewartville

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