Greater burdock is a biennial herbaceous plant native to Eurasia. Its stem is erect and grows to a height of 1 to 2 meters. It is grooved, hollow, branched, often reddish, and covered with rough hairs. The taproot is long and fleshy.
It is a weed commonly found in abandoned fields, along fences, and roadsides. It can cause problems in pastures and hayfields.
It is found in open areas, often in moist, fertile soils. It thrives in sandy clays and loams. It grows in full sun and tolerates partial shade. It is less common than lesser burdock.
To prevent seed dispersal, cut the plants before flowering, at the point where the flower buds emerge. Repeat this process if the plants regrow.
Source: https://www.iriisphytoprotection.qc.ca/Fiche/MauvaiseHerbe?imageId=5083
