The USDA Zone info is a great tool for gardeners to help us estimate your gardening 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 Boulder City you should be able to figure out when it's the best time to plant coral bells.

Planting Calendar for Coral Bells

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

Since coral bells are moderately cold tolerant you can plant them a little bit earlier in the year than other frost tender plants.

The earliest that you can plant coral bells 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 coral bells and expect a good harvest is probably October. You probably don't want to wait any later than that or else your coral bells may not have a chance to really do well. If you are starting your coral bells indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is February 15 in Boulder City. It might get as low as 25°F during the coldest months of winter.

Just be sure to remember that the actual date of last frost is just an average because it is based on the USDA zone info for Boulder City and it will vary from year to year. Since half of the time in Boulder City there is a last frost after February 15 be ready to cover your coral bells if you have a surprise late frost.

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.