From Ground: First, water the soil around the wall bellflower to dampen it which makes digging easier and minimizes stress to the plant. Use a garden spade to dig a broad trench around the plant, ensuring to keep the plant's root ball intact. Carefully work the spade under the root ball to lift the plant from its original spot.
From Pot: If wall bellflower is in a pot, water it thoroughly. Turn the pot upside down while supporting the plant with one hand. Gently tap on the bottom of the pot to help the plant and its root ball slide out. Be careful not to pull the plant out by its stem.
From Seedling Tray: Water the tray and use a lifting tool or your fingers to carefully lift the seedling from its cell, making sure to not damage the roots or stem in the process. Handle wall bellflower by the leaves instead of the stem, as the stem is quite delicate.