From Ground: Begin by water the chinese St John's wort plant to dampen the soil, which makes digging it up easier. Use a spade or shovel to dig a wide trench around the plant, ensuring the plant's root ball remains intact. Once a sufficient trench has been dug, carefully work a spade under the root ball to lift the plant from its original location.
From Pot: Begin by watering the pot to dampen the soil, this makes it easier to remove chinese St John's wort from the pot. Invert the pot while holding your hand over the soil surface with the chinese St John's wort stem between your fingers. Gently tap the pot's rim on a firm surface, like a potting bench or table, to loosen the root ball. If the plant doesn't slide out easily, use a knife to carefully separate the pot from the soil.
From Seedling Tray: Water the seedling tray to dampen the soil. Then, use a spoon or similar tool to gently lift out the chinese St John's wort seedlings without damaging the tender roots.