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.

The earliest that you can plant nolana in River Falls should be figured out by referring to the USDA zone info.

Planting Calendar for Nolana

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

Since nolana are not cold tolerant you have to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant nolana in River 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 nolana and expect a good harvest is probably August. Any later than that and your nolana may not have a chance to fully mature. If you are starting your nolana indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

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

Always keep in mind that USDA zone info for River Falls may not be accurate from year to year and the actual date of last frost will vary from year to year. Half of the time in River Falls you get surprised by a frost after May 15 so always be ready to cover your nolana if you have one of those late frosts.

USDA Zone Info for River 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 River Falls

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