Greater Burdock, also known as Common Burdock, Beggar's Buttons, and Cocklebuttons
Kingdom: Plantae, Division: Tracheophyta, Class: Magnoliopsida, Order: Asterales, Family: Asteraceae, Genus: Arctium, Species: A. lappa · Asteraceae (Aster, Daisy, or Sunflower family) · Simple, deciduous
Species
Arctium lappa
Leaf Type
Simple, deciduous
Family
Asteraceae (Aster, Daisy, or Sunflower family)
Shape
Cordate (heart-shaped) to broadly ovate with wavy margins
Size
Large, approximately 10-18 inches long and 8-12 inches wide, typical for mature basal leaves of this species
Margin
Undulate to irregularly dentate with slightly wavy edges
Arrangement
Alternate on the flowering stem, forming a dense basal rosette in the first year
Rarity
Very Common, often considered a persistent weed in disturbed areas
Color & Pattern
Vibrant medium to bright green upper surface with whitish, prominent veins; lower surface tends to be lighter and slightly greyish or woolly
Venation Pattern
Pinnate with prominent, pale whitish-green midribs and branching lateral veins forming a netted pattern
Texture & Surface
Somewhat leathery, dull upper surface, with a noticeably paler and slightly hairy or cottony underside
Description
Greater burdock is a stout, biennial herbaceous plant that forms a massive rosette of large, heart-shaped leaves in its first year. In the second year, it bolts to produce tall, branching stems with purple, thistle-like flower heads that eventually develop into the infamous hook-tipped burrs designed to catch on animal fur and clothing.
Key Features
Extremely large, heart-shaped basal leaves with hollow, fluted petioles and whitish prominent veins, paired with sticky, hooked burrs later in the season
Habitat
Disturbed soils, roadsides, waste areas, abandoned fields, and rich soils in sunny to part-shaded environments
Geographic Range
Native to temperate regions of Europe and Asia; widely naturalized throughout North America and other parts of the world
Condition Notes
Fair condition with minor insect chewing holes visible on several leaves and some natural lower leaf yellowing
Interesting Facts
The clinging burrs of the burdock plant served as the direct inspiration for the invention of Velcro by Swiss engineer George de Mestral in 1941 after he examined them stuck to his dog's fur
Medicinal & Uses
The taproot is widely consumed as a vegetable (known as gobo in Japanese cuisine) and has traditional uses in herbal medicine as a blood purifier and diuretic. Non-toxic, though the hairs can occasionally cause mild skin irritation.
Ecological Role
Provides cover for small ground-dwelling animals and insects; its tenacious burrs are highly effective at seed dispersal via epizoochory (attaching to passing animals)
Similar Species
Coltsfoot (Tussilago farfara) or Butterbur (Petasites hybridus), which have similarly large leaves but different flower structures and habitat preferences
Foraging Tips
Look for massive basal rosettes in waste places and along woodland edges during spring and summer; first-year roots can be harvested in late autumn or early spring before the flowering stalk develops
Toxicity Warning
Non-toxic. The roots and young stems are edible, though care should be taken to ensure plants are harvested from uncontaminated soils away from roadsides