From Ground: To remove white deadnettle from the ground, first thoroughly water the plant. This will make the soil softer and easier to work with. Then, using a garden spade or shovel, dig a wide circle around the plant, taking care not to cut into the roots. Carefully lift the plant out of the hole, keeping as much soil around the roots as possible.
From Pot: If white deadnettle is in a pot, water it thoroughly first. Invert the pot and tap the rim on a hard surface to loosen the plant. If the plant does not slide out easily, run a knife around the inside of the pot to loosen the soil and roots.
From Seedling Tray: To remove white deadnettle from a seedling tray, water the tray first. Then gently push the plant up from the bottom of the cell or use a spoon to lift it out, being careful not to damage the roots or stems.