While bleeding heart plants do produce seeds, they most typically are propagated by division. The clumping roots of the your bleeding hearts will expand underground, and can be lifted or divided as needed. If you find that you need to transplant your bleeding heart plants, do so in spring. The same rule applies to division, which should be performed every two to three years. To transplant your bleeding hearts, lift the entire root clump from the ground using a spade or shovel. Brush off any excess dirt, and divide the clump into two or three large pieces, each with plenty of root matter. Re-plant the dicentra in the same way your planted it originally-in spring, with the crown meeting the surface of the soil.