From Ground: Before removing the chinese rhubarb plant, water it thoroughly. This helps to keep the root ball intact during the removal process. Use your spade or shovel to carefully dig a wide trench around the plant, being careful to keep the plant's root ball intact. Work the spade under the root ball, lifting it gently from the ground.
From Pot: Ensure the soil is moist before removing the plant. Tip the pot to the side and gently tap the rim on a firm surface to loosen the soil. If the plant doesn't slide out on its own, carefully cut or break away the pot to remove the plant, being sure not to damage the root ball.
From Seedling Tray: If you are transplanting a small chinese rhubarb seedling from a tray, wet the soil around the seedling to help keep the roots intact. Using a spoon or small trowel, carefully lift the seedling from below, supporting the leaves with your other hand.