One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Brownfield you can estimate when it's a good idea to plant sorrel by referring to 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 little earlier in the year than more sensitive plants.

The earliest that you can plant sorrel in Brownfield is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant sorrel and expect a good harvest is probably September. You probably don't want to wait any later than that or else your sorrel may not have a chance to fully mature. You can get started a few weeks earlier by starting your sorrel indoors.

Last Frost Date

The average date of last frost is April 15 in Brownfield. You can expect an average low temperature of 5°F in the coldest months of winter.

Since the USDA zone info for Brownfield is an average the actual date of last frost is different every year. Since half of the time in Brownfield it frosts late in the year after April 15 be ready to protect your sorrel in the event of a surprise late frost.

USDA Zone Info for Brownfield

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Brownfield

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