When to plant
Perennial in zones 3–9. Direct sow in spring or fall. One of the first edible greens in spring, often harvestable weeks before anything else is ready. Goes dormant in midsummer heat and winter. Returns reliably year after year from the same crown. One plant lasts 5–10 years.
Soil & site
Moderately fertile, well-drained soil. pH 5.5–6.8. Work in compost. Tolerates partial shade and wetter conditions than most herbs. A very adaptable, tough plant. Site it where you want it permanently — sorrel is a long-lived perennial.
Feeding
Light feeder. A balanced fertilizer or compost in early spring when growth begins is sufficient. Occasional liquid fertilizer after heavy harvests helps plants recover. Over-fertilizing with nitrogen reduces the desirable sour tang.
Common problems
Aphids and slugs on young leaves. Powdery mildew in late summer (mainly cosmetic). Very few serious problems. The main issue is leaf quality in midsummer heat — leaves may become very sour and coarse. Cut the plant back hard in midsummer and fresh leaves will emerge.
When to harvest
Harvest young leaves when 4–6 inches long for the best flavor (bright, lemony, and refreshing). Larger, older leaves are more intensely sour and can be used in cooking where the flavor will be tempered. Harvest before the plant sends up flower stalks, which signals the end of quality leaf production.
How to harvest
Cut outer leaves at the base with scissors or by snapping them off. Leave the inner leaves intact for continued growth. Harvest up to a third of the plant at a time. Remove flower stalks as they appear to keep the plant focused on leaf production. A single plant can produce for several years.
Storage & use
Fresh leaves: refrigerate for 3–5 days. Use in sorrel soup (classic French), sauce for fish, spring salads, and as a sour accent in mixed green salads. Blanch and freeze puree for winter use. The sourness comes from oxalic acid — eat in moderation (same compound as spinach). High in vitamin C.
Useful for growing sorrel
A few things that make this one easier — chosen for this plant, not a generic list.
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