One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The best time to plant bittercress in Las Vegas should be determined by reviewing the USDA zone info.

Planting Calendar for Bittercress

Frost tolerance for bittercress:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

You can plant bittercress slightly earlier in the year because they do ok in moderate cold.

The earliest that you can plant bittercress in Las Vegas 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 bittercress and expect a good harvest is probably September. Any later than that and your bittercress may not have a chance to grow to maturity. You can get started a little bit earlier by starting your bittercress indoors.

Last Frost Date

The average date of last frost is February 15 in Las Vegas. It might get as low as 20°F during the coldest months of winter.

Since the USDA zone info for Las Vegas may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Half of the time in Las Vegas there is a last frost after February 15 so just be sure to be ready to cover your bittercress in the event of one of those late frosts.

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.