One of the first steps you take when you are making a decision about 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.

A way of getting a good idea when to plant kale is to consult the USDA zone info for Union.

Planting Calendar for Kale

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

Kale are moderately cold tolerant which means that you can start planting them earlier than other frost tender plants.

The earliest that you can plant kale in Union 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 kale and expect a good harvest is probably September. Any later than that and your kale may not have a chance to grow to maturity. You can get started a little bit earlier by starting your kale indoors.

Last Frost Date

In Union the average date of last frost happens on April 15. You can expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Union is not always accurate the actual date of last frost will vary from year to year. Half of the time in Union it frosts late in the year after April 15 so be sure to be ready to cover your kale in the event of one of those late frosts.

USDA Zone Info for Union

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 Union

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