The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You can estimate when it's a good idea to plant osteospermum in Redwood Falls by looking at the USDA zone info.

Planting Calendar for Osteospermum

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

Osteospermum do ok in moderate cold which means that you can plant them a little earlier in the year than other frost tender plants.

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

Last Frost Date

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

Remember that USDA zone info for Redwood Falls is an average and the actual date of last frost will vary from year to year. Half of the time in Redwood Falls there is a last frost after May 15 so make sure that you are prepared to protect your osteospermum in the event of a late frost.

USDA Zone Info for Redwood 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 Redwood Falls

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