Why Dwarf Baby Tears Is One of the Hardest Carpet Plants I’ve Ever Grown (And Why I Prepare It on Mats) Let’s talk about the plant that humbles aquascapers. Micranthemum callitrichoides — better known as HC Cuba or Dwarf Baby Tears. It’s one of the smallest aquarium plants in the world. Tiny round leaves. Incredible pearling when it’s happy. The kind of carpet you see in high-end aquascapes and...