· the victoria longwood hybrid water lily is a unique species, capable of holding many pounds of weight due to its complex criss-crossing vein system, which denver botanic gardens experts called “life buoys. ” the aquatic plants are not endangered, but they are a hybrid of two threatened plant species. · the waterlily weigh-off, led by denver botanic gardens , challenges an impressive list of public gardens and zoos around the world to see how much weight their victoria waterlily leaves can hold. · the international water lily weigh - off found the missouri botanical gardens (mobot) water lily pads held the most weight of any lily pads in the world. · the weigh - off , which is now in its third year, is an annual social media contest organized by denver botanic gardens. Missouri botanical garden, came in a close second with 182 pounds (82. 5 kg). · the 2025 water lily weigh - off champion held 183 pounds (credit: · the water lily weigh off is an annual worldwide face-off between public gardens and zoos to see whose enormous victoria water lily can hold the most weight before it sinks. · for three years, public gardens and zoos worldwide have come together to celebrate the strength of their victoria waterlilies (or giant waterlilies ) through the giant waterlily weigh - off. It held an astonishing 183 pounds (83 kg) before finally giving way. Bok tower gardens) this year’s winning lily pad came from florida’s bok tower gardens.