What've sheep got to do with it?
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Parts: Tender leaves, stems
For: Commonly found in poor soils of yards or fields this sour tasting herb can be used to make an iced tea drink, in salads or as a cooked green. It's a tasty plant to nibble on in the field.
See also wood sorrel.
An ingredient in the well known "essiac tea" treatment for tumor reduction.
Sheep sorrel has a long history of traditional use as an anti-tumor herb and for strong immune system support.