From Ground: First, water the roughstem Rosinweed thoroughly a day before the transplant to ensure the soil is moist, which will make digging easier and will help to keep the root ball together. Then, use a spade or shovel to dig around the plant, creating a wide margin around its base to avoid cutting through roots. Carefully work the tool underneath to pry the root ball from the soil with as little damage as possible.
From Pot: Water the roughstem Rosinweed and allow it to drain before starting. Gently squeeze the pot or tap the sides to loosen the soil's grip on the pot. Tilt the pot and guide the plant out by the base of its stems rather than pulling on the foliage.
From Seedling Tray: Water the tray well before transplanting. Press up from the bottom of the cell or use a trowel to lift the seedling gently, being careful not to damage the tender roots or stems.