From Ground: Water the stool iris thoroughly a day before the transplant to help the soil adhere to the roots. Use a spade to dig around the plant, taking care not to damage the root ball. Gently lift the stool iris from its place, keeping as much soil around the roots as possible.
From Pot: Gently tip the container on its side and tap the bottom to loosen the soil and roots. Slide the root ball out while supporting the plant with your other hand. If roots are circling tightly, gently tease them apart.
From Seedling Tray: Press up from the bottom of the cell to lift the stool iris. Handle the plant by the leaves rather than the stem to avoid damage. Inspect the root system and tease roots if they are tangled or bound.
