Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of making a decision about when it's the best time to plant sorrel is to consult the USDA zone info for Cloquet.

Planting Calendar for Sorrel

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

Sorrel do ok in a little bit of cold which tells us that you can plant them just a bit earlier in the year than other frost tender plants.

The earliest that you can plant sorrel in Cloquet 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. Any later than that and your sorrel may not have a chance to fully mature. Starting your sorrel indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average all chance of frost has passed is on May 15 in Cloquet. You should expect an average low temperature of -30°F in the coldest months of winter.

Since the USDA zone info for Cloquet may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Cloquet last frost occurs after May 15 so make sure that you are prepared to cover your sorrel if you have a late frost.

USDA Zone Info for Cloquet

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Cloquet

You may be interested in your other planting guides for Cloquet.