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.

By reviewing the USDA zone info for Sioux Falls you will be able to determine when to plant geum.

Planting Calendar for Geum

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

You can plant geum a bit earlier in the year because they are barely cold tolerant.

The earliest that you can plant geum 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 geum and expect a good harvest is probably August. If you wait any later than that and your geum may not have a chance to fully mature. Starting your geum indoors is a great way to get them started a little bit earlier.

Last Frost Date

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

Since the USDA zone info for Sioux Falls is an average the actual date of last frost is different every year. Half of the time in Sioux Falls you get a frost after May 15 so just be sure to be ready to cover your geum in the event of a surprise 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.