It will seem like the succulent has lost its leaves when it is submerged. I've propagated a dying plant this way and found myself with a few new baby plants just from the leaves of the dying plant. You should have at least one pair of leaves and a single stem. Germination can take a few months, although the seeds germinate faster in summer. Although propagating succulents is not an easy task, it is possible for you to grow kalanchoe plants using seeds. Cuttings from an existing plant can be used to propagate ice-plants.