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.

The USDA zone info for Boulder City should be reffered to in order 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 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 Boulder City is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant kale and expect a good harvest is probably October. 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 few weeks earlier.

Last Frost Date

On average the last frost has passed is on February 15 in Boulder City. In the coldest months of winter you should expect an average low temperature of 25°F.

Always keep in mind that USDA zone info for Boulder City is just an average and the actual date of last frost changes from year to year. Half of the time in Boulder City there is a last frost after February 15 so just be sure to be ready to protect your kale if you have one of those late frosts.

USDA Zone Info for Boulder City

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°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 30°F.

Plants to Grow in Boulder City

You may be interested in your other planting guides for Boulder City.