From Ground: Water the yellow clematis plant to dampen the soil. Using a shovel or spade, dig a wide perimeter around the plant, going deep enough to include the majority of the root ball. Carefully slide the spade beneath the root ball and gently lift the plant from the soil, minimizing root disturbance.
From Pot: Thoroughly water the yellow clematis, allowing moisture to reach the roots. Grasp the base of the plant gently and tip the pot sideways. Tap the sides and bottom of the pot to loosen the root ball. Gently slide the plant out, supporting the root ball with your hand.
From Seedling Tray: Water the seedlings well before starting. Use a garden trowel or a fork to loosen the soil around the individual yellow clematis seedling. Gently lift the seedling by the leaves, not the stem, to avoid damage. Support the root ball with your other hand as you lift it out.