From Ground: Begin by watering the yellow Buckeye to make the soil around it easier to work with. Use your spade or shovel to dig a wide ring around it, being sure not to damage the root ball in the process. Carefully slide the spade beneath the root ball and lift the plant from its location.
From a Pot: Water the plant well before beginning. Turn the pot sideways and gently pull the yellow Buckeye by grabbing at its base. If the plant doesn't slide out easily, you might need to run a knife around the inside edge of the pot to loosen the roots.
From a Seedling Tray: Water the tray and then gently ease the yellow Buckeye out, making sure to avoid damaging the roots. Use a utensil like a spoon or a garden trowel for this to minimize damage.