Introduction

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2,4-D amine - Apply 0.91 L/acre of formulations containing 500 g/L in early fall or early spring.
Dicamba - In grass pasture and rangeland only, apply 1.86 L/acre in 20 to 30 gallons (90 to 135 L) per acre when leaves are
fully expanded.
Dichlorprop + 2,4-D - Apply 1.62 L/acre in early spring or fall.
Gumweed
2,4-D LV ester - In grass pastures and non-crop land, apply 2,4-D LV ester (500 g/L) at 0.89 L/acre to the foliage of actively
growing plants.
Hemp Dogbane
2,4-D amine or LV ester - Apply 1.38 to 1.82 L/acre of formulations containing 500 g/L 2,4-D in fall before frost and while
plant leaves are green.
Glyphosate - Apply 2.83 to 4.86 L/acre (360 formulations – see glyphosate page for other rates) when hemp dogbane
is in the early bud stage. Apply in 10 gallons/acre (45 L/acre) water. Do not disturb treated plants for at least 7 days after
application.
Hoary Cress
Amitrol 240 - For non-selective patch treatment in pastures and non-crop land, apply 8.9 to 13.8 L/acre.
Glyphosate - As a spot treatment in labelled crops, apply 2.83 to 4.86 L/acre (360 g/L formulations or equivalent of other
formulations) in 10 to 30 gallons/acre (45 to 135 L/acre) water when most plants have reached the early bud stage. Do not
disturb treated plants for at least 10 days following treatment.
Leafy Spurge
Amitrol 240 - Apply 15.2 to 18.5 L/acre in 10 to 30 gallons/ acre (45 to 135 L/acre) water in non-cropped areas and pastures
when the weed is between the late stages of flowering and early seed development.
Dicamba - Apply 0.84 L/acre in 10 to 20 gallons/ acre (45 to 90 L/acre) water for top growth control when the weed is
actively growing. Patch treatment or pasture.
2,4-D amine - Apply 1.82 L/acre of formulations containing 500 g/L 2,4-D at early flowering stage. Repeat at least once to
new growth later in the season. Control of established plants and new seedlings will require continued applications for a
period of at least 4 to 5 years.
Navius - In grass pastures and rangeland, apply Navius at 68 g/acre for control.
Tordon 22K - In rangeland and grass pasture, apply 3.6 L/acre in 90 to 180 gallons/acre (400 to 800 L/acre) of water to
actively growing weeds. WARNING - Picloram is a very persistent and water-soluble herbicide. Do not apply to permeable
soil. Do not apply to irrigated areas. Take special precautions to prevent drift.
Overdrive - In grass pastures and non-crop land, apply at 115 g per acre for top-growth control.
Locoweeds, Lupines, and Milk-vetches
2,4-D LV ester - In grass pastures and non-crop land, apply 2,4-D LV ester (500 g/L) at 1.78 to 2.75 L/acre at the full bloom
stage.
Milkweed
Amitrol 240 - Apply 7.6 to 11.3 L/acre in 10 to 30 gallons/ acre (45 to 135 L/acre) water in non-cropped areas and pastures in
the early summer when all the shoots have emerged.
Glyphosate - When making Preharvest applications, use 1.0 L/acre (360 g/L formulations or equivalent of other
formulations). For patch treatments, apply 4.86 L/acre (360 g/L formulations or equivalent of other formulations) in
10 gallons/acre (45 L/ acre) water. Apply when most plants have reached the bud to bloom stage. Reduced results may
occur on plants treated after full bloom as not all milkweed plants reach the required stage of growth at the same time.
Repeat treatments may be required. Do not disturb plants for 10 days following treatment. Do not apply to plants covered
with dust.