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

It's possible to estimate when to plant tritoma by looking at the USDA zone info for Las Vegas.

Planting Calendar for Tritoma

Frost tolerance for tritoma:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Since tritoma are one of those plants that can tolerate quite a bit of cold weather you can plant them a lot earlier in the year than other plants that might not handle the cold.

The earliest that you can plant tritoma in Las Vegas 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 tritoma and expect a good harvest is probably October. Any later than that and your tritoma may not have a chance to fully mature. You can get started a few weeks earlier by starting your tritoma indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Las Vegas. You can expect an average low temperature of 20°F in the coldest months of winter.

Always keep in mind that USDA zone info for Las Vegas is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Las Vegas you get a frost after February 15 so make sure that you are prepared to cover your tritoma in the event of a surprise late frost.

USDA Zone Info for Las Vegas

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Las Vegas

You may be interested in your other planting guides for Las Vegas.