A lemony, sharp-tasting leaf that returns reliably every spring once established, needing almost no attention beyond an occasional trim. Its tangy bite comes from oxalic acid, which mellows the more the leaves are cooked. The one rule: snip off flower stalks as they appear, or the plant pours its energy into seed instead of leaves.
Chives and other alliums planted close by are thought to help keep aphids off sorrel’s tender young leaves.