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

By checking out the USDA zone info for Andover you should be able to figure out when you can plant kale.

Planting Calendar for Kale

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

Kale tend to make it in some cold which tells us that you can plant them a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant kale in Andover 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. If you wait any later than that and your kale may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your kale indoors.

Last Frost Date

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

Keep in mind that USDA zone info for Andover is an average and the actual date of last frost is different every year. Since half of the time in Andover you get surprised by a frost after May 15 be ready to cover your kale if you have a late frost.

USDA Zone Info for Andover

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 Andover

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