One of the first steps you take when you are getting a good idea 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 can be reviewed to estimate when you can plant steirodiscus.

Planting Calendar for Steirodiscus

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

Steirodiscus do ok in moderate cold which tells us that you can start planting them slightly earlier than more sensitive plants.

The earliest that you can plant steirodiscus in Boulder City 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 steirodiscus and expect a good harvest is probably September. Any later than that and your steirodiscus may not have a chance to grow to maturity. Starting your steirodiscus indoors is a great way to get them started a little bit 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.

Keep in mind that USDA zone info for Boulder City is not always accurate and the actual date of last frost is different every year. Since half of the time in Boulder City it frosts late in the year after February 15 be ready to cover your steirodiscus in the event of a 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.