Agrobase Canada
Wormseed mustard (Treacle-mustard)
Erysimum cheiranthoides

General Description: Annual or winter annual, reproducing only by seed. It is distinguished from other mustards by its slender leaves which do not clasp the stem, the 2-branched hairs on the stems and 3-branched hairs on leaves which can be seen with magnification, a slightly bluish-green cast to leaves and stems, the small, pale yellow flowers, and the slender, angular seedpods about 2 cm (4/5 in.) long which are tipped with a short blunt beak.
Stems & Roots: Stems 15 - 100 cm (6 - 40 in.) high, erect, usually branched, firm, apparently hairless but slightly rough due to tiny, flat-lying, 2-branched hairs; leaves alternate (1 per node), nearly linear or broader near the middle and tapering to both ends, without teeth or with a few wavy or slightly pointed teeth, slightly rough on both surfaces with tiny 3-branched hairs.
Flowers & Fruit: Flowers similar to those of Wild mustard but paler yellow and much smaller, about 6 mm (¼ in.) across and crowded in clusters at the ends of the stems and branches, these lengthening as the pods begin to develop; seedpods on slender stalks about 1 cm (2/5 in.) long which stand out from the stem, the pod itself standing upwards or nearly parallel to the stem, 15-25 mm (3/5-1 in.) long, usually somewhat 4-angled in cross-section and tipped by a short blunt beak; seeds dull reddish-yellow, very small, about 1 mm (1/25 in.) long and usually less than half as wide. Flowers from mid-June to late autumn and sheds mature seeds soon after flowering begins; plants often turning purplish at maturity.
Habitat: Wormseed mustard is common throughout Ontario, growing in a very wide variety of habitats from dry, rocky, shallow soils to moist sandy shores, to rich loam and clays, and is found in grainfields, hay and pastureland, waste places, gardens, poorly kept lawns, roadsides and railways, riversides, sandy beaches and limestone talus.

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: ★★★
Aatrex Liquid 480
Efficiency: ★★★
Accurate
Efficiency: ★★★
Adrenalin SC
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: ★★★
Attain XC B
Efficiency: ★★★
Banvel
Efficiency: ★★★
BASF Pyramin DF
Efficiency: ★★★
Blackhawk
Efficiency: ★★★
Broadstrike RC
Efficiency: ★★★
Buctril M
Efficiency: ★★★
Compas 480 EC
Efficiency: ★★★
Converge 75 WDG
Efficiency: ★★★
Converge Flexx
Efficiency: ★★★
Converge Pro Suspension
Efficiency: ★★★
Dicamba L
Efficiency: ★★★
Dyvel
Efficiency: ★★★
Dyvel DSP
Efficiency: ★★★
Embutox
Efficiency: ★★★
Enlist Duo
Efficiency: ★★★
Estaprop XT
Efficiency: ★★★
Focus
Efficiency: ★★★
Formula 40 C
Efficiency: ★★★
Frontier Max Plus
Efficiency: ★★★
GF-2654 TC
Efficiency: ★★★
GF-2654 TSOY
Efficiency: ★★★
GF-2726 TSOY
Efficiency: ★★★
GoldWing
Efficiency: ★★★
Liberty 200 SN
Efficiency: ★★★
Marksman
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 Sodium 300
Efficiency: ★★★
Mextrol 450
Efficiency: ★★★
MKH 6561 70WG
Efficiency: ★★★
OcTTain XL
Efficiency: ★★★
Option 2.25 OD
Efficiency: ★★★
Plus M Ester 600
Efficiency: ★★★
PP-3317
Efficiency: ★★★
Pyramin FL
Efficiency: ★★★
Restore II
Efficiency: ★★★
Retain B
Efficiency: ★★★
Rexade B
Efficiency: ★★★
Roundup Ultra Liquid
Efficiency: ★★★
Roundup Xtend with VaporGrip Technology
Efficiency: ★★★
Scuttle
Efficiency: ★★★
Sencor 480 F
Efficiency: ★★★
Sencor 500 Flowable
Efficiency: ★★★
Stellar B
Efficiency: ★★★
Target DS
Efficiency: ★★★
Traxos Two Broadleaf Component
Efficiency: ★★★
Trophy 600 A
Efficiency: ★★★
Trophy 600 B
Efficiency: ★★★
Trophy A
Efficiency: ★★★
Trophy B
Efficiency: ★★★
Tropotox Plus 400
Efficiency: ★★★
XtendiMax with VaporGrip Technology
Efficiency: ★★★
Enforcer M
Efficiency: ★★
Arsenal
Efficiency: ★
Dacthal W-75
Efficiency: ★
Accurate WSB
Efficiency: not_available
Ally 20 SG
Efficiency: not_available
Ally Herbicide Dry Flowable 60
Efficiency: not_available
Arsenal Powerline
Efficiency: not_available
Attain A
Efficiency: not_available
Attain B
Efficiency: not_available
Attain XC A
Efficiency: not_available
Badge II
Efficiency: not_available
Banvel Dry Eg
Efficiency: not_available
Boost M
Efficiency: not_available
BRY/MAE 2 (A Component of RRR/BRY/MAE Herbicide Tank Mix)
Efficiency: not_available
Carnival 540
Efficiency: not_available
Clearout 41 Plus
Efficiency: not_available
Credit 360
Efficiency: not_available
Credit 45
Efficiency: not_available
Credit Plus
Efficiency: not_available
Credit Xtreme
Efficiency: not_available
DB-858
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
Elim EP 25
Efficiency: not_available
Elim SG Toss-N-Go
Efficiency: not_available
Engenia
Efficiency: not_available
Express DF 75
Efficiency: not_available
Express SG EUP
Efficiency: not_available
Express Toss-N-Go Dry Flowable 75
Efficiency: not_available
Fexapan Plus Vaporgrip Technology
Efficiency: not_available
Fieldstar WDG
Efficiency: not_available
Fieldstar WDG WSP
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
GlyKamba
Efficiency: not_available
Impede
Efficiency: not_available
Inferno WDG
Efficiency: not_available
M1691
Efficiency: not_available
Metsulfuron Methyl EUP Toss-N-Go
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
Nuance
Efficiency: not_available
Nuance WSB
Efficiency: not_available
Nufarm Boost
Efficiency: not_available
Nufarm Fluroxypyr
Efficiency: not_available
Nufarm Glyphosate 360
Efficiency: not_available
Nufarm Spike 75
Efficiency: not_available
Nufarm Trophy 600 A
Efficiency: not_available
Nufarm Trophy 600 B
Efficiency: not_available
NuGlo
Efficiency: not_available
Option 35 DF
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
Prowl H2O
Efficiency: not_available
Pulsar
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
Roundup Transorb Liquid
Efficiency: not_available
RRR 1 (A Component of RRR/BRY/MAE Herbicide Tank Mix)
Efficiency: not_available
Sencor 75 DF
Efficiency: not_available
Sencor Solupak
Efficiency: not_available
Sentrallas
Efficiency: not_available
Signal F
Efficiency: not_available
Touchdown IQ
Efficiency: not_available
Tribenuron Methyl EUP DF 75
Efficiency: not_available
Triton Broadleaf
Efficiency: not_available