From Ground: The white prickly poppy plant should be gently extracted from the soil. Start by watering the white prickly poppy plant, as moist soil will make it easier to remove. Then, use the garden spade to dig a trench around the white prickly poppy plant, ensuring to keep the root ball intact. Push the spade under the root ball to lift the plant.
From Pot: First, turn the pot on its side and gently pull the white prickly poppy plant by its base. If it's compacted, try tapping the bottom of the pot to dislodge the plant.
From Seedling Tray: Carefully lift seedlings out of their compartments using a utensil such as a wooden popsicle stick or pencil. Handle white prickly poppy seedlings by their leaves rather than their stem which can be easily damaged.