Select a small to medium pot with a relatively large drain hole in the bottom. Fill a deep planting saucer with small stones and place the pot on top of them. Fill the pot two-thirds full of high-humus potting soil.
Place one hand over the potted primrose and gently tip the current pot with your other hand. Shake the pot a little, if necessary, to remove the primrose from the pot and into your free hand. Be careful not to damage the roots.
Jiggle any loose, old soil from the roots of the primrose. Place the primrose atop the soil in the new pot. Add more high-humus soil over the roots on all sides until the pot is nearly full and pat the surface of the soil lightly with your fingers.
Fill the saucer with water up to the bottom of the pot and consistently keep the waterline at this level. Never water the primrose itself, or you will drown it. Place the repotted primrose in a cool, dim place to grow.