Agrobase Canada
Common burdock
Arctium minus

Plant description. Common burdock is a biennial that grows as a rosette of leaves the first year and then produces a 5-foot-tall, erect, bushy flowering stem. Rosette leaves are distinctive due to their large size, heart-shaped base, wooly undersurface, and hollow leaf stalks (petioles). Stem leaves are similar to but smaller than rosette leaves. Located at the ends of branches or at leaf axils on the flower stem are flower heads comprised of a bur with hooked bristles beneath a closely packed cluster of tubular, purplish flowers. The weed is best known for the hooked bristles on its burs that stick to fur and clothing. The only means by which common burdock reproduces are its seeds.
Seedlings and shoots. First to emerge are two leaves (cotyledons) that are large, spoon-shaped, and have a waxy surface. Subsequent leaves are alternate, egg-shaped, flocked with short hairs, puckered between the veins, and bitter tasting. Attached to each leaf is a flared stalk (petiole) that clasps the basal stem of the rosette.
Stems. During the rosette stage of growth, the stem remains compressed and close to the soil surface. As flowering is initiated, the stem elongates producing an erect flower stem that is 2- to 6-feet tall, much-branched, rough-hairy, hollow, and grooved lengthwise or angular.
Leaves. The large rosette leaves are 20 inches long, 12 inches wide, and attached to the stem by way of hollow petioles that may be purple-tinged. The upper leaf surface is dark green and coarse while the underside is pale gray-green and wooly. Rosette leaves have a heart-shaped base and wavy edges. Stem leaves are alternate (1 leaf per node). Lower stem leaves resemble rosette leaves except they are smaller. Leaves gradually become smaller, less heart-shaped, and tapered at both ends as their location progresses up toward the tip of the stem. Also, their petioles become shorter and solid rather than hollow.
Flowers. Each flower head consists of bristles with hooked tips that form a round, 3/4-inch-wide bur beneath a closely packed cluster of many individual, tube-shaped, reddish-purple flowers. Flowers appear alone or grouped on short stalks attached to the end of main branches or at leaf axils on the stem.
Fruits and seeds. In each bur are many single-seeded, 1/4-inch-long, brown, oblong, angular fruits having a short, stiff bristle at one end.

Effective on
2,4-D Amine 500
Efficiency: ★★★
2,4-D Amine 600
Efficiency: ★★★
2,4-D BEE-4
Efficiency: ★★★
2,4-D Ester 700
Efficiency: ★★★
2,4- D Ester 700
Efficiency: ★★★
2,4-D LV-600
Efficiency: ★★★
2,4-D LV-700
Efficiency: ★★★
Agri Star 2,4-D Ester 700
Efficiency: ★★★
Agri Star MCPA DMA 500
Efficiency: ★★★
Albaugh 2,4-D Amine 600
Efficiency: ★★★
Albaugh 2,4-D Amine 600 Liquid
Efficiency: ★★★
Albaugh MCPA Ester 600 Liquid
Efficiency: ★★★
Arsenal
Efficiency: ★★★
Arsenal Powerline
Efficiency: ★★★
Attain XC B
Efficiency: ★★★
Curtail M
Efficiency: ★★★
Dyvel
Efficiency: ★★★
Element
Efficiency: ★★★
Enlist Duo
Efficiency: ★★★
Estaprop XT
Efficiency: ★★★
Formula 40 C
Efficiency: ★★★
Frontline 2,4-D XC A
Efficiency: ★★★
Frontline 2,4-D XC B
Efficiency: ★★★
Frontline A
Efficiency: ★★★
Frontline B
Efficiency: ★★★
Frontline I
Efficiency: ★★★
Garlon 4
Efficiency: ★★★
Garlon Ultra
Efficiency: ★★★
Garlon XRT
Efficiency: ★★★
GF-2654 TC
Efficiency: ★★★
GF-2654 TSOY
Efficiency: ★★★
GF-2726 TSOY
Efficiency: ★★★
Grazon
Efficiency: ★★★
Grazon XC
Efficiency: ★★★
MCPA 2 EH Ester 600
Efficiency: ★★★
MCPA Amine
Efficiency: ★★★
MCPA Amine 600
Efficiency: ★★★
MCPA DMA 500
Efficiency: ★★★
MCPA Ester 500
Efficiency: ★★★
MCPA Ester 500 LV
Efficiency: ★★★
MCPA Ester 600
Efficiency: ★★★
MCPA-K
Efficiency: ★★★
MCPA Sodium 300
Efficiency: ★★★
OcTTain XL
Efficiency: ★★★
Plus M Ester 600
Efficiency: ★★★
PP-3317
Efficiency: ★★★
Remedy EC
Efficiency: ★★★
Remedy MSO
Efficiency: ★★★
Remedy XRT
Efficiency: ★★★
Restore B
Efficiency: ★★★
Restore II
Efficiency: ★★★
Retain B
Efficiency: ★★★
Rexade B
Efficiency: ★★★
Roundup Ultra Liquid
Efficiency: ★★★
Scuttle
Efficiency: ★★★
Stellar B
Efficiency: ★★★
Stellar XL
Efficiency: ★★★
Traxos Two Broadleaf Component
Efficiency: ★★★
Trophy 600 A
Efficiency: ★★★
Trophy 600 B
Efficiency: ★★★
Trophy A
Efficiency: ★★★
Trophy B
Efficiency: ★★★
Adrenalin SC
Efficiency: ★
Attain A
Efficiency: not_available
Attain B
Efficiency: not_available
Attain XC A
Efficiency: not_available
Banvel 483
Efficiency: not_available
Banvel
Efficiency: not_available
Banvel Dry Eg
Efficiency: not_available
Blackhawk
Efficiency: not_available
Boost M
Efficiency: not_available
Broadband
Efficiency: not_available
Carnival 540
Efficiency: not_available
Clearout 41 Plus
Efficiency: not_available
Clearview
Efficiency: not_available
Credit 360
Efficiency: not_available
Credit 45
Efficiency: not_available
Credit Plus
Efficiency: not_available
Credit Xtreme
Efficiency: not_available
Curtail F
Efficiency: not_available
Deploy 75 DF
Efficiency: not_available
DPX-R9674 50 SG
Efficiency: not_available
Durango
Efficiency: not_available
Dycleer Agricultural
Efficiency: not_available
Engenia
Efficiency: not_available
Fexapan Plus Vaporgrip Technology
Efficiency: not_available
Fluroxypyr 180
Efficiency: not_available
Fluroxypyr EC
Efficiency: not_available
Fluroxypyr WDG
Efficiency: not_available
FX
Efficiency: not_available
GF-2018
Efficiency: not_available
GF-772
Efficiency: not_available
GF-871
Efficiency: not_available
GF2050
Efficiency: not_available
Glean
Efficiency: not_available
GlyKamba
Efficiency: not_available
Impede
Efficiency: not_available
M1691
Efficiency: not_available
Milestone
Efficiency: not_available
MON 76429 Liquid
Efficiency: not_available
MON 76431 Liquid
Efficiency: not_available
MON 76669 Liquid
Efficiency: not_available
MON 79791 Liquid
Efficiency: not_available
MON 79828 Liquid
Efficiency: not_available
Nimble
Efficiency: not_available
Nimble WSB
Efficiency: not_available
Nufarm Boost
Efficiency: not_available
Nufarm Fluroxypyr
Efficiency: not_available
Nufarm Glyphosate 360
Efficiency: not_available
Nufarm Trophy 600 A
Efficiency: not_available
Nufarm Trophy 600 B
Efficiency: not_available
NuGlo
Efficiency: not_available
Perimeter
Efficiency: not_available
Perimeter II
Efficiency: not_available
Polaris
Efficiency: not_available
Powermax Liquid
Efficiency: not_available
PP-31155
Efficiency: not_available
Prestige XC A
Efficiency: not_available
Prestige XC B
Efficiency: not_available
Prestige XL
Efficiency: not_available
Pulsar
Efficiency: not_available
Reclaim II A
Efficiency: not_available
Reclaim II B
Efficiency: not_available
Refine Extra 75 DF
Efficiency: not_available
Refine Extra 75 Toss-N-Go
Efficiency: not_available
Refine SG
Efficiency: not_available
Refine SG Toss-N-Go
Efficiency: not_available
Renegade HC Liquid
Efficiency: not_available
Restore A
Efficiency: not_available
Roundup Transorb Liquid
Efficiency: not_available
Sentrallas
Efficiency: not_available
Sightline A
Efficiency: not_available
Signal F
Efficiency: not_available
Spitfire 50 SC
Efficiency: not_available
Touchdown IQ
Efficiency: not_available
XRM-5171
Efficiency: not_available