From Ground: Dampen the soil around the overcup oak plant. Then, dig a wide circular trench around the plant about 18 inches from its base using a shovel, ensuring the plant's root ball remains intact. Gently work the spade under the root ball to lift the plant and its attached soil.
From Pot: Water the plant within the pot about an hour before you plan to transplant it. Grip the plant at its base, tilt the pot and then gently pull it out. Ensure to support the root ball to avoid any damage.
From Seedling Tray: If the overcup oak is coming from a seedling tray, water it thoroughly. Gently lift it from its cell without tugging on the stem to ensure the roots don't break. Hold it by its leaves or root ball only.