From Ground: Begin by watering the upright sedge plant well, this will moisten the soil making extraction easier without harming the root system. Using a shovel or spade, dig in a wide circle around the plant, keeping a safe distance from the base to avoid damaging the roots. Lever the spade under the root ball and gently lift the plant free from the ground.
From Pot: If your upright sedge is in a pot, watering first also applies. After watering, turn the pot on its side or upside down and tap gently to release the plant. If the plant resists, use a trowel to further loosen the soil and roots.
From Seedling Tray: If the upright sedge is in a seedling tray, gently hold the stem at the base and lightly tug. If it resists, use a spoon or similar implement to gently dig around the root and help lift it up.