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.

Pesticides
2,4-D Amine 500
intensity: ★★★
2,4-D Amine 600
intensity: ★★★
2,4-D BEE-4
intensity: ★★★
2,4-D Ester 700
intensity: ★★★
2,4- D Ester 700
intensity: ★★★
2,4-D LV-600
intensity: ★★★
2,4-D LV-700
intensity: ★★★
Aatrex Liquid 480
intensity: ★★★
Accurate
intensity: ★★★
Adrenalin SC
intensity: ★★★
Agri Star 2,4-D Ester 700
intensity: ★★★
Agri Star MCPA DMA 500
intensity: ★★★
Albaugh 2,4-D Amine 600
intensity: ★★★
Albaugh 2,4-D Amine 600 Liquid
intensity: ★★★
Albaugh MCPA Ester 600 Liquid
intensity: ★★★
Attain XC B
intensity: ★★★
Banvel
intensity: ★★★
BASF Pyramin DF
intensity: ★★★
Blackhawk
intensity: ★★★
Broadstrike RC
intensity: ★★★
Buctril M
intensity: ★★★
Compas 480 EC
intensity: ★★★
Converge 75 WDG
intensity: ★★★
Converge Flexx
intensity: ★★★
Converge Pro Suspension
intensity: ★★★
Dicamba L
intensity: ★★★
Dyvel
intensity: ★★★
Dyvel DSP
intensity: ★★★
Embutox
intensity: ★★★
Enlist Duo
intensity: ★★★
Estaprop XT
intensity: ★★★
Focus
intensity: ★★★
Formula 40 C
intensity: ★★★
Frontier Max Plus
intensity: ★★★
GF-2654 TC
intensity: ★★★
GF-2654 TSOY
intensity: ★★★
GF-2726 TSOY
intensity: ★★★
GoldWing
intensity: ★★★
Liberty 200 SN
intensity: ★★★
Marksman
intensity: ★★★
MCPA 2 EH Ester 600
intensity: ★★★
MCPA Amine
intensity: ★★★
MCPA Amine 600
intensity: ★★★
MCPA DMA 500
intensity: ★★★
MCPA Ester 500
intensity: ★★★
MCPA Ester 500 LV
intensity: ★★★
MCPA Ester 600
intensity: ★★★
MCPA Sodium 300
intensity: ★★★
Mextrol 450
intensity: ★★★
MKH 6561 70WG
intensity: ★★★
OcTTain XL
intensity: ★★★
Option 2.25 OD
intensity: ★★★
Plus M Ester 600
intensity: ★★★
PP-3317
intensity: ★★★
Pyramin FL
intensity: ★★★
Restore II
intensity: ★★★
Retain B
intensity: ★★★
Rexade B
intensity: ★★★
Roundup Ultra Liquid
intensity: ★★★
Roundup Xtend with VaporGrip Technology
intensity: ★★★
Scuttle
intensity: ★★★
Sencor 480 F
intensity: ★★★
Sencor 500 Flowable
intensity: ★★★
Stellar B
intensity: ★★★
Target DS
intensity: ★★★
Traxos Two Broadleaf Component
intensity: ★★★
Trophy 600 A
intensity: ★★★
Trophy 600 B
intensity: ★★★
Trophy A
intensity: ★★★
Trophy B
intensity: ★★★
Tropotox Plus 400
intensity: ★★★
XtendiMax with VaporGrip Technology
intensity: ★★★
Enforcer M
intensity: ★★
Arsenal
intensity: ★
Dacthal W-75
intensity: ★
Accurate WSB
intensity: N/A
Ally 20 SG
intensity: N/A
Ally Herbicide Dry Flowable 60
intensity: N/A
Arsenal Powerline
intensity: N/A
Attain A
intensity: N/A
Attain B
intensity: N/A
Attain XC A
intensity: N/A
Badge II
intensity: N/A
Banvel Dry Eg
intensity: N/A
Boost M
intensity: N/A
BRY/MAE 2 (A Component of RRR/BRY/MAE Herbicide Tank Mix)
intensity: N/A
Carnival 540
intensity: N/A
Clearout 41 Plus
intensity: N/A
Credit 360
intensity: N/A
Credit 45
intensity: N/A
Credit Plus
intensity: N/A
Credit Xtreme
intensity: N/A
DB-858
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Deploy 75 DF
intensity: N/A
DPX-R9674 50 SG
intensity: N/A
Durango
intensity: N/A
Dycleer Agricultural
intensity: N/A
Elim EP 25
intensity: N/A
Elim SG Toss-N-Go
intensity: N/A
Engenia
intensity: N/A
Express DF 75
intensity: N/A
Express SG EUP
intensity: N/A
Express Toss-N-Go Dry Flowable 75
intensity: N/A
Fexapan Plus Vaporgrip Technology
intensity: N/A
Fieldstar WDG
intensity: N/A
Fieldstar WDG WSP
intensity: N/A
Fluroxypyr 180
intensity: N/A
Fluroxypyr EC
intensity: N/A
Fluroxypyr WDG
intensity: N/A
FX
intensity: N/A
GF-2018
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GF-772
intensity: N/A
GlyKamba
intensity: N/A
Impede
intensity: N/A
Inferno WDG
intensity: N/A
M1691
intensity: N/A
Metsulfuron Methyl EUP Toss-N-Go
intensity: N/A
MON 76429 Liquid
intensity: N/A
MON 76431 Liquid
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MON 76669 Liquid
intensity: N/A
MON 79791 Liquid
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MON 79828 Liquid
intensity: N/A
Nimble
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Nimble WSB
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Nuance
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Nuance WSB
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Nufarm Boost
intensity: N/A
Nufarm Fluroxypyr
intensity: N/A
Nufarm Glyphosate 360
intensity: N/A
Nufarm Spike 75
intensity: N/A
Nufarm Trophy 600 A
intensity: N/A
Nufarm Trophy 600 B
intensity: N/A
NuGlo
intensity: N/A
Option 35 DF
intensity: N/A
Perimeter
intensity: N/A
Perimeter II
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Polaris
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Powermax Liquid
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PP-31155
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Prowl H2O
intensity: N/A
Pulsar
intensity: N/A
Refine Extra 75 DF
intensity: N/A
Refine Extra 75 Toss-N-Go
intensity: N/A
Refine SG
intensity: N/A
Refine SG Toss-N-Go
intensity: N/A
Renegade HC Liquid
intensity: N/A
Roundup Transorb Liquid
intensity: N/A
RRR 1 (A Component of RRR/BRY/MAE Herbicide Tank Mix)
intensity: N/A
Sencor 75 DF
intensity: N/A
Sencor Solupak
intensity: N/A
Sentrallas
intensity: N/A
Signal F
intensity: N/A
Touchdown IQ
intensity: N/A
Tribenuron Methyl EUP DF 75
intensity: N/A
Triton Broadleaf
intensity: N/A