Rambling Dock / Arrow Weed
Rumex sagittatus
Also known as: Rambling Dock, Turkey Rhubarb, Arrowhead Vine, Arrow Weed
'Rumex' is the ancient Latin name for sorrel and dock. 'Sagittatus' is a Latin adjective denoting an arrow-like shape (think 'sagittarius'), commonly used in botany. Rambling dock is a deep-rooted perennial weed of disturbed ground, roadsides, creek margins, and coastal grassland throughout Australia. It is an introduced European species that smothers other plants – active removal is encouraged. Young leaves are edible.
When to Forage
Year-round; best in spring and early summer. Remove before seeding to prevent spread.
Cautions
Rambling dock contains high oxalic acid, particularly in older leaves. Always blanch or boil leaves and discard the cooking water – do not eat raw in large quantities. Those with kidney stones, gout, or arthritis should avoid or minimise consumption. Contains tannins; large amounts may reduce iron absorption. Those on blood thinners should note the vitamin K content. The climbing, scrambling habit means rambling dock often grows through other vegetation – take care to identify the correct leaves when harvesting from tangled growth.
Nutrition
Good source of vitamins A, C, and K; B vitamins including riboflavin and B6; iron (though oxalates reduce bioavailability – eat with vitamin C foods to improve absorption), calcium, potassium, and manganese. The arrow-shaped leaves have a pleasant, tangy, sorrel-like flavour when young. Like other Rumex species, rambling dock is related to buckwheat and the seeds can be eaten. The plant does not produce the thick yellow taproot characteristic of other docks such as curly dock.
How to Identify
- A scrambling or climbing perennial vine, not an upright rosette-forming dock. Stems are long, slender, and wiry, twining through shrubs, fences, and other vegetation for support.
- Leaves are distinctly arrow-shaped (sagittate) – triangular with two backward-pointing basal lobes. They are bright green, smooth, and slightly fleshy, typically 5–12 cm long.
- Produces sprays of small, greenish to reddish-brown flowers that mature into papery, winged seed clusters typical of the Rumex genus. Flowering occurs mostly in spring and summer.
- Young leaves have a mild, tangy, lemony-sour taste from oxalic acid – similar to sorrel but gentler. The vine can form dense, smothering mats over other plants.
- Root system is deep and fibrous rather than a single thick taproot. The plant spreads by both seed and underground runners, making it highly invasive.
Lookalikes
Another scrambling or climbing plant found in similar coastal and riparian habitats. Muehlenbeckia species have small, rounded to triangular leaves and wiry, tangled stems, but the leaves are much smaller and lack the distinct arrow shape and sour taste of rambling dock. Not a food plant.
How to Forage
Harvest young leaves from the growing tips of the vine in spring and early summer, before the plant flowers. Look for the tender, bright green arrow-shaped leaves at the ends of trailing stems – older leaves further back along the vine become tough, bitter, and high in oxalate, and are best for cooking only. The vine can be cut back aggressively when foraging, which is environmentally beneficial: removing this invasive scrambler before it sets seed reduces its spread and gives native plants a chance to recover.
Recipe — Dock Leaf and Lemon Chickpea Pancake
Ingredients: 1 large handful young dock leaves; 1 cup chickpea (besan) flour; 3/4 cup water; 1 clove garlic, minced; 2 tbsp olive oil; lemon zest; 1/2 tsp ground turmeric; salt and pepper. Method: Blanch dock leaves in boiling water for 2 minutes, drain, refresh in cold water, squeeze dry, and finely chop. Whisk chickpea flour, water, turmeric, salt, pepper, and lemon zest into a smooth batter, then fold in the chopped dock leaves. Heat olive oil in a non-stick pan over medium-high heat and sauté garlic for 30 seconds. Pour in the batter, spread evenly, and cook 3–4 minutes per side until golden and set. Slide onto a plate, fold in half, and serve with crusty bread and a squeeze of lemon. Using the roots: because rambling dock is such a tenacious weed, it benefits the environment to remove as much of the plant as possible when harvesting – the root can be dried and powdered into a dandelion-style coffee substitute, used to make a bitter liver tonic, or made into a decoction, infusion, or tincture as a mild laxative (it contains anthraquinones).
Want more?
Join our newsletter for more recipes, foraging guides and upcoming events.