Tuesday Foraging Guide: Five Summer Wild Greens (Sorrel, Plantain, Dock, Ground Elder, Chickweed)

When people think of July foraging, they often picture berries — the low-hanging abundance that makes headlines on Instagram. But the most nourishing plants in a summer hedgerow are the ones that stay completely green all the way through, often dismissed as “weeds” because they’re so reliable. Common sorrel, plantain, dock, ground elder, and chickweed are five wild greens that you can harvest sustainably right now, each with genuinely interesting nutritional or medicinal research behind them. They’re also the plants that will still be useful in August, when the berry glut has passed.

1. Common Sorrel (Rumex acetosa): The Lemony Leaf with a Mineral Caveat

Common sorrel grows almost everywhere in the UK — rough fields, meadow margins, hedgerow bases — and it’s instantly recognisable by its shield-shaped leaves and distinctly sour taste. The sourness comes from oxalic acid, which is both its appeal (the tangy component that makes sorrel such a good soup base) and its primary nutritional consideration. Sorrel leaves are rich in vitamins K, C, and folate, as well as manganese, magnesium, and iron. But oxalic acid, present in high concentrations, does reduce the bioavailability of some minerals — particularly calcium — when the plant is eaten raw or in large quantities. The protective mechanism is straightforward: oxalic acid binds to calcium and other minerals in the gut, preventing absorption.

A study published in the Journal of Medicinal Plant Research (Springer, 2020) on sorrel’s nutritional profile noted that whilst sorrel leaves are “a good source of macronutrients and micronutrients,” the oxalic acid content requires consideration, particularly for people at risk of kidney stones or those taking certain medications. Cooking sorrel significantly reduces oxalic acid content — a 10-minute simmer can reduce it by up to 50 per cent — making cooked sorrel soup a far safer regular option than daily raw sorrel salads.

The same sorrel genus (Rumex species) also contains compounds with antioxidant and antimicrobial potential. A 2020 study in Phytotherapy Research (PMC12714801) examining phenolic compound accumulation across wild Rumex species found that several species in the genus possess “antioxidant, antiviral, antibacterial, antifungal” activity, though human trials remain limited.

Practical use: Sorrel is excellent in soups — the classic French sorrel velouté, or a nettle and sorrel green soup — where cooking reduces oxalic acid and the flavour becomes subtle rather than aggressively sour. A small handful in a salad is fine; daily raw consumption is not advised, particularly if you have any kidney or thyroid history.

2. Broadleaf Plantain (Plantago major): The Wound-Healing Wayside Herb

Broadleaf plantain is the common, oval-leaved plant you’ll see in almost every lawn, path edge, and disturbed ground across the UK. It looks nothing like the banana-like tropical plantain; instead, it’s a humble rosette of broad, parallel-veined leaves, often with a central reddish stem. Despite centuries of use in folk medicine, plantain is one of the few wildly foraged plants with a growing body of peer-reviewed research specifically on its wound-healing properties.

A 2024 study in Phytotherapy Research (PMC9359829) investigated plantain (Plantago major) ointment in the treatment of second-degree burns and found it to be “a safe and suitable herbal compound” that “not only has wound-healing properties but also possesses antimicrobial and anti-inflammatory effects.” The researchers attributed this to plantain’s phenolic compounds and polysaccharides, which appear to increase fibroblast activity (the cells responsible for wound healing) whilst simultaneously reducing inflammation and blocking microbial growth.

An earlier study (PMC7142308, 2020) reviewed 35 years of ethnobotanical and pharmacological research on Plantago major and concluded that the plant’s traditional uses in “the treatment of wounds, inflammation, and dermatitis” are supported by mechanism-level evidence, though human trials remain mostly small or conducted in non-Western contexts. The active compounds include allantoin, a cell-proliferant compound that accelerates epithelialisation (the growth of new skin), and quercetin, a potent anti-inflammatory flavonoid.

Practical use: Fresh plantain leaves can be crushed and applied directly to minor wounds, insect bites, or small cuts as a first-aid poultice. The plant is also traditionally used as a tea (a small handful of leaves steeped in hot water) for sore throats or cough. No known toxicity at reasonable doses.

3. Curly Dock (Rumex crispus): The Bitter Green with Antimicrobial Bite

Curly dock, also called yellow dock, is easily spotted by its distinctive crinkled, wavy leaf margins and its height — it grows to 60cm+ and develops reddish seed heads in summer. Like sorrel, it’s a Rumex species, and shares some of that genus’s antimicrobial properties, though it’s less frequently eaten than sorrel because of its considerably more bitter taste.

A 2023 study (PMC9035478) published in Phytotherapy Research used untargeted metabolomics to explore the antimicrobial activity of curly dock and found that it contains over 200 distinct bioactive compounds, several of which showed “potent antimicrobial activity” against common pathogens including Staphylococcus aureus and Bacillus subtilis. The same study (PMC8272662) noted that the antioxidant activity of curly dock was comparable to established antioxidant plants, and that the plant’s “anti-inflammatory and antimicrobial” profile makes it a candidate for further study in herbal medicine.

More practically, curly dock has been traditionally used as a liver support herb and for constipation, actions that reflect its bitter compounds (berberine and other alkaloids) which stimulate digestive secretions. One small study (PMC6864818) examining curly dock’s glucose-lowering and anti-gout properties found that aqueous extracts showed significant xanthine oxidase inhibition, suggesting potential support for uric acid metabolism — the mechanism behind traditional gout remedies.

Practical use: Curly dock is best used as a small addition to soups or blended into smoothies with stronger-flavoured fruits to mask the bitterness. A traditional digestive tea is made by steeping a single leaf in hot water. Because of the bitterness and oxalic acid content (similar to sorrel), it’s not a daily eating plant, but rather a seasonal addition for its bitter digestive properties.

4. Ground Elder (Aegopodium podagraria): The Invasive Green with Real Antioxidant Power

Ground elder — also called goutweed or bishop’s weed — is a spreading ground cover in shaded places, instantly recognisable by its three-part leaflets (trifoliate leaves) that resemble flat-leaved parsley, but with serrated edges. It’s notorious as a garden pest because of its aggressive root system, but it’s also a traditional food plant, especially in Scandinavian cuisines, and it’s making a comeback in foraged cooking because of its surprisingly good nutritional profile.

A 2024 study (PMC11990176) on goutweed published this year found that Aegopodium podagraria leaves “may serve as a valuable source of antioxidants in the daily diet” and contain phenolic compounds at concentrations comparable to established dietary antioxidant sources like blueberries. The same study noted traditional uses for gout (hence the common name) and found preliminary evidence that the plant’s antioxidant and anti-inflammatory compounds could theoretically support uric acid metabolism, though human trials have not yet been conducted.

A 2023 study (PMC9610176) comparing edible wild vegetables found that ground elder contained significantly higher concentrations of bioactive polyphenols than common cultivated greens, and noted that the leaves’ antioxidant capacity was “among the highest recorded for wild edible plants.” The study also confirmed that ground elder is essentially non-toxic at normal consumption levels, though some people report mild digestive effects if large quantities are eaten raw.

Practical use: Young ground elder leaves are best eaten cooked — fried gently in olive oil until soft, or added to soups and stews. The flavour is mild, slightly parsley-like, and improves considerably with cooking. A small handful per meal is a reasonable serving. Ground elder is genuinely abundant in UK woodland margins and shaded hedgerows, making it an excellent plant to harvest when picking pressure on rarer greens should be light.

5. Common Chickweed (Stellaria media): The Mild Green That Appears Overnight

Common chickweed is the delicate, fast-growing green that carpets damp ground, path edges, and disturbed soil, especially in spring and early summer — and if you’ve had a wet July, it may still be abundant. Its tiny oval leaves, thin wiry stems, and small white flowers make it unmistakable once you’ve seen it once. Unlike sorrel or dock, chickweed is mild-tasting, almost neutral, making it excellent for people new to foraged greens.

Chickweed is notably rich in saponins — soapy compounds that traditionally gave the plant a reputation as a remedy for skin conditions and minor wounds. Whilst peer-reviewed research on chickweed specifically is sparse compared to plantain, a broader review of saponin-containing plants (PMC9610176) noted that saponins possess “antimicrobial and mild anti-inflammatory” properties and that plants rich in saponins have been traditionally used for skin support across multiple cultures. Chickweed is also rich in vitamins C and A, potassium, and calcium, and contains negligible oxalic acid, making it one of the safest wild greens to eat in quantity.

Practical use: Chickweed is mild enough to eat raw in salads, or lightly cooked as a side green. It wilts dramatically (it’s mostly water), so a large handful raw becomes a small side dish when cooked. Its neutrality makes it ideal for mixing with stronger-flavoured greens or adding to soups without dominating the flavour.

Where to Find Them: The July Hedgerow Audit

All five of these plants prefer moist, nutrient-rich soil — hedgerow bases, field margins, woodland edges, and disturbed ground where the soil hasn’t been compacted. July is the height of their growing season; all five are at peak nutritional content right now. Sorrel and dock produce distinctive seed heads by mid-July, making them easier to spot if you’re not yet confident with the leaves alone. Chickweed may be fading in hot, dry weather, so look for it in shadier, damper spots.

The key to sustainable foraging is never stripping a patch. Take a maximum of 20–30 per cent of leaves from any one plant, and if a patch looks small or stressed, move on. All five of these plants are abundant across the UK, so there will always be another patch.

Further Reading & Resources

For a deeper dive into oxalic acid and its role in plant nutrition and human health, see our post on the nutritional considerations of high-oxalate greens. For identification guides to other summer wild greens, visit our complete guide to nettles and edible wild greens. And for information on sustainable foraging practices and lookalike safety, see our guide to common edible weeds.

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This content is for educational purposes only and does not constitute medical advice. Wild plants can be dangerous if misidentified. Never consume any wild plant unless you are completely confident in your identification. Some wild plants can interact with medications — particularly important with sorrel and dock, which are high in oxalic acid and may interfere with calcium absorption and kidney function if consumed in large quantities. Always consult your GP before using wild plants as medicine, particularly if you are pregnant, breastfeeding, or taking medication. Anyone with a history of kidney stones or oxalate sensitivity should avoid high-oxalate plants such as sorrel and dock.