Johnson Grass?
Question:I live in Louisiana and every year I get the same clump of Johnson Grass in my yard. I have spot treated it with weed killer and it does kill it for a season but every season it comes back. Any Suggestions?
Answers:
Effort in areas of light infestation
Clumps and individual plants may be hand pulled during June, just after a rain when the ground is soft. All plant parts should be removed from the area. Broken stems and roots left in the ground should be dug up if only a small area is involved. It is more effective to spot-treat the individual plants with herbicide than to pull them, and large clumps can be sprayed with 2% Roundup using a hand sprayer or backpack sprayer. Herbicide treatment may need to be repeated for several years to ensure good control.
Maintenance control
Preferred treatment is hand pulling of individual plants immediately upon discovery. All plant parts, including rhizomes, must be removed. It may be necessary to hand pull a population several times to obtain control. Surrounding seed sources should be eliminated where possible to prevent continual reinvasion.
Johnson Grass is a beast! I have battled it for years. I have done everything known to man short of using dynamite. However, you are on the right path. Here is what to do for Dig it and spray with roundup mutliple times. It make three years to kill it.
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