The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Bethlehem can be looked at to determine when it's possible to plant kale.

Planting Calendar for Kale

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

You can plant kale just a bit earlier in the year because they are moderately cold tolerant.

The earliest that you can plant kale in Bethlehem 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. If you wait any later than that and your kale may not have a chance to fully mature. Starting your kale indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Bethlehem. You can expect an average low temperature of -5°F in the coldest months of winter.

Since the USDA zone info for Bethlehem is an average the actual date of last frost changes from year to year. Half of the time in Bethlehem you get a frost 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 Bethlehem

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Bethlehem

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