Do you know what type of plant this is? Well My sis - Kareen gave me these from her trip to Florida. They are mangrove trees. Started out as these dry pods which she told me to place in water. And lo and behold they grew. They are kept in water with the stones to anchor them. They have so far required nothing more then my adding water when needed. I looked up some sites and people keep them in fish tanks etc with other types of plants. So far they are holding their own.