The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Boulder City you can determine when to plant garden cress by using the USDA zone info.

Planting Calendar for Garden cress

Frost tolerance for garden cress:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Since garden cress do not do well in cold weather it's important to wait until after the last frost has passed before you can plant them.

The earliest that you can plant garden cress in Boulder City 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 garden cress and expect a good harvest is probably September. If you wait any later than that and your garden cress may not have a chance to fully mature. Starting your garden cress indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost 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 an average and the actual date of last frost is different every year. Since half of the time in Boulder City there is a last frost after February 15 be ready to cover your garden cress 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.