Dig up lamium plants whenever you notice them growing in the landscape. Push the blade of the shovel as deep as you can beneath the soil surface to remove the entire taproot of the plant. Transfer the plant and all root material to the bucket after you remove it from the soil.
Apply weed-blocking fabric over garden areas where lamium was growing. The weed-blocking fabric will suppress growth and prevent any new plants from emerging from the soil. Apply 3 inches of shredded mulch over the weed-blocking fabric to create an additional barrier.
Spray any lamium plants that emerge through the weed-blocking fabric and mulch with the glyphosate herbicide spray. Saturate the plant foliage evenly on a sunny day when the temperatures range between 60 and 80 degrees F. Do not to spray surrounding plants with glyphosate, because this nonselective herbicide will kill almost any plant.
Apply the granular three-way herbicide over a lawn when lamium appears along with grass. Pour the herbicide into the spreader and apply it at the rate recommended on the package. Cover the lawn thoroughly with the three-way herbicide in early spring and in autumn for the most effective eradication results.
Continue vigilant removal methods every year to control lamium growth and spread in your landscape.