From Ground: Begin by
watering the river birch thoroughly to make the soil easier to work with. Using your shovel or spade, carefully start to dig a wide trench around the base of the river birch, trying to keep as much of the root system intact as possible. Gently pry the river birch from the ground, ensuring to lift it from the base of the root ball, not from the trunk.
From Pot: First, thoroughly water your potted river birch. With your gardening gloves on, gently tip the pot to its side and roll it a bit to loosen the soil. As the root ball becomes loose, carefully slide the river birch out of the pot, ensuring not to pull on the trunk or branches.
From Seedling Tray: Ensure your river birch seedlings are well watered. With your trowel, gently scoop out each river birch seedling being careful not to disturb the delicate root system. Hold the seedlings by their leaves, not by the stem or roots.