From Ground: First, water the dahlia 'Pooh' plant to dampen the soil. Then, dig a wide trench around the plant using a shovel or spade, ensuring the plant's root ball remains intact. Carefully work the spade under the root ball to lift the plant from its original location.
From Pot: Gently tap the sides of the pot to loosen the plant. Turn the pot upside down and support the plant with your hand as you carefully slide it out. If the plant is root-bound, gently tease the roots apart before transplanting.
From Seedling Tray: Water the seedlings in the tray before removal. Use a hand trowel to carefully lift each seedling, keeping the soil around the roots intact. Handle the seedlings by the leaves to avoid damaging the delicate stems.