Plantlets are young or small plants. Many plants such as spider plants naturally create stolons with plantlets on the ends as a form of asexual reproduction. Vegetative propagules or clippings of mature plants may form plantlets. An example is mother of thousands. Many plants reproduce by throwing out long shoots or runners that can grow into new plants. Mother of thousands appears to have lost the ability to reproduce sexually and make seeds, but transferred at least part of the embryo-making process to the leaves to make plantlets, let the top two inches of soil dry out between each watering. Overwatering can cause rot in the plant's roots, so make sure the soil doesn't feel moist to the touch before you water. In the winter, water your Mother of Thousands less, since shorter days will prompt your plant to go into a resting period. A little plant, as one produced on the leaf margins of a kalanchoe or the aerial stems of a spider plant.