The USDA Zone info is a great tool for gardeners to help us determine 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.

In Colville you can determine when it's possible to plant kale by looking at the USDA zone info.

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 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 Colville 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 fully mature. Starting your kale indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Colville. In the coldest months of winter you should expect an average low temperature of -10°F.

Keep in mind that USDA zone info for Colville may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Colville you get a frost after April 15 so always be ready to protect your kale in the event of a late frost.

USDA Zone Info for Colville

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 Colville

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