Lily of the valley plants thrive when they are divided, transplanted and given room to grow. In fact, they should be divided every 3 to 5 years. To divide the plants, you need aged manure, organic compost, garden shears, a watering can, a garden spade, leaf mold and all-purpose fertilizer.Continue Reading
Choose a well draining spot that receives either partial or full shade. Prepare the area that you plan to plant your lilies in by adding manure and compost to the soil.
To prepare to move your lily of the valley, water it thoroughly a few days before you plan to move it. Trim the stems back to 5 or 6 inches above the ground.
Dig up the plant with a spade early in the morning or late in the afternoon. Gently separate the individual plants. Separate tangled roots using clippers only where necessary. Prune any dead or dying parts of the plant. Move the plant right away. Keep it moist, and cover it to avoid exposure to sunlight.
Replant the lilies at the same depth as they were before. Give each plant about 6 to 12 inches of space. Mulch the newly planted flowers with 1/2 inch of compost. Moisten the soil, but don't water the flowers so much that they become soggy.