Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Boulder City you can estimate when you can plant polka dot plant by referring to the USDA zone info.

Planting Calendar for Polka Dot Plant

Frost tolerance for polka dot plant:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Polka Dot Plant require warm weather which tells us that it's important to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant polka dot plant 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 polka dot plant and expect a good harvest is probably September. Any later than that and your polka dot plant may not have a chance to fully mature. Starting your polka dot plant indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Boulder City the average date of last frost happens on February 15. In the coldest months of winter you can expect an average low temperature of 25°F.

Keep in mind that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Boulder City and it is different every year. Half of the time in Boulder City it frosts late in the year after February 15 so make sure that you are prepared to cover your polka dot plant if you have one of those late frosts.

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.