One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of making a decision about when to plant kale is to refer to the USDA zone info for Trenton.

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 a little bit earlier in the year because they are one of those plants that can tolerate a little bit of cold weather.

The earliest that you can plant kale in Trenton 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. You probably don't want to wait any later than that or else your kale may not have a chance to really do well. You can get started a little bit earlier by starting your kale indoors.

Last Frost Date

The average date of last frost is April 15 in Trenton. You can expect an average low temperature of -5°F in the coldest months of winter.

Always keep in mind that USDA zone info for Trenton may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Trenton last frost occurs 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 Trenton

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 Trenton

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