One of the first steps you take when you are estimating 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 sorrel in Redwood Falls can be estimated by looking at the USDA zone info.

Planting Calendar for Sorrel

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

Since sorrel do well in moderate cold you can plant them a bit earlier in the year than more sensitive plants.

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

Last Frost Date

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

Since the USDA zone info for Redwood Falls may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Redwood Falls you get surprised by a frost after May 15 so make sure that you are ready to cover your sorrel 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.