One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's possible to estimate when it's a good idea to plant schizanthus by checking out the USDA zone info for Sioux Falls.

Planting Calendar for Schizanthus

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

Since schizanthus require warm weather you have to wait until after the last frost when the weather gets warmer before you can plant them.

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

The last month that you can plant schizanthus and expect a good harvest is probably August. If you wait any later than that and your schizanthus may not have a chance to really do well. Starting your schizanthus indoors is a great way to get them started a couple of weeks 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 may not be accurate from year to year and the actual date of last frost changes from year to year. Half of the time in Sioux Falls it frosts late in the year after May 15 so always be ready to protect your schizanthus if you have 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.