Herbicides for Kudzu

Roundup® Concentrate Poison Ivy Plus Tough Brush Killer
2% Triclopyr, 18% Glyphosate
6 oz per gallon

Triclopyr 4 Herbicide is the same as Garlon 4 Herbicide and is designed to control mesquite, sumac, tallow, poison oak, cactus, and other heavy brush. It can also be used basal treatment to kill large trees. Triclopyr 4E provides excellent selective control of brush and broadleaf weeds without damaging grasses.

6 x 0.18 = 1.08 oz glyphosate in a gallon

Eraser 41% Glyphosate (roundup-pro generic) is a systemic post-emergent herbicide
Mix 2 oz of Eraser 41% with 1 gallon of water.

2 x 0.41 = 0.82 oz in a gallon per gallon. 0.82/1.08 = 76% of the strength of Roundup® Concentrate Poison Ivy Plus Tough Brush Killer

Therefore, to make an equivalent strength with Eraser 41% mix in 2.5 oz per gallon.

Kudzu

From RoundUp page – “Spray vines growing up poles or mature trees. If vines are growing up poles, fences or tree trunks with mature bark cut vines to a height of 3 to 4 feet and spray vines thoroughly. If vines are climbing shrubs, or tree trunks with green bark, cut vines at base and spray regrowth. If spraying regrowth, shield shrubs and immature tree trunks from spray drift with a piece of cardboard or plastic.”

Apply herbicide in the spring and late summer. Spring is a great time to apply treatment because kudzu will be vulnerable from its winter dormancy. Treat the kudzu again in the late summer, and repeat the two treatments annually until the plant is dead.

For larger, older plants, you may need to treat kudzu several times a year for a few years to eliminate the plant.

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