One of the best tools that you have as gardeners to help us determine your gardening schedule is the 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 Sioux Falls should be reffered to in order to figure out when it's possible to plant arctotis.

Planting Calendar for Arctotis

Frost tolerance for arctotis:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Arctotis do well in moderate cold which tells us that you can plant them a little bit earlier than plants that are more sensitive to the cold.

The earliest that you can plant arctotis in Sioux Falls 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 arctotis and expect a good harvest is probably August. You probably don't want to wait any later than that or else your arctotis may not have a chance to fully mature. If you are starting your arctotis indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

The average date of last frost is May 15 in Sioux Falls. It might get as low as -25°F during the coldest months of winter.

Keep in mind that USDA zone info for Sioux Falls is just an average and the actual date of last frost changes from year to year. Since half of the time in Sioux Falls there is a last frost after May 15 be ready to cover your arctotis if you have one of those late frosts.

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.