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

In Sioux Falls you can estimate when to plant verbena by looking at the USDA zone info.

Planting Calendar for Verbena

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

You can plant verbena just a tiny bit earlier in the year because they do ok in moderate cold.

The earliest that you can plant verbena in Sioux Falls is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant verbena and expect a good harvest is probably August. Any later than that and your verbena may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your verbena indoors.

Last Frost Date

On average the last frost is on May 15 in Sioux Falls. You should expect an average low temperature of -25°F in the coldest months of winter.

Keep in mind that USDA zone info for Sioux Falls is an average and the actual date of last frost changes from year to year. Half of the time in Sioux Falls you get surprised by a frost after May 15 so be sure to be ready to protect your verbena if you have a late frost.

USDA Zone Info for Sioux Falls

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°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 -20°F.

Plants to Grow in Sioux Falls

You may be interested in your other planting guides for Sioux Falls.