GEOGRAPHY

Bio - Flora

Largest Species of Plants

This list features the largest plants on Planet Earth by size/weight.

RANK	PLANT	SIZE	DESCRIPTION
1	Kelp (Macrocystis pyrifera)	Up to 60 meters (197 feet) in length	A large brown seaweed that forms underwater forests along coastlines, providing habitat and food for diverse marine life.
2	Giant Seagrass (Posidonia oceanica)	Up to 40 meters (130 feet) in length	A marine flowering plant found in the Mediterranean Sea, known for its extensive underwater meadows that provide habitat for various marine species.
3	Bamboo (Phyllostachys edulis)	Up to 28 meters (92 feet) in height	A species of giant timber bamboo known for its rapid growth rate, often used for construction and crafts.
4	Corypha Palm (Corypha umbraculifera)	Up to 25 meters (82 feet) tall	Also known as the talipot palm, it is one of the largest palms in the world, native to the Indian subcontinent, known for its fan-shaped leaves.
5	Giant Reed (Arundo donax)	Up to 6 meters (20 feet) tall	A tall perennial grass native to the Mediterranean region, known for its vigorous growth and ability to thrive in various environments.
6	Giant Hogweed (Heracleum mantegazzianum)	Up to 5 meters (16 feet) tall	A large herbaceous plant known for its impressive height and large flower clusters; it is considered invasive in some regions.
7	Giant Water Lily (Victoria amazonica)	Up to 3 meters (10 feet) in diameter	A large aquatic plant native to the Amazon River basin, recognized for its massive floating leaves and beautiful flowers.
8	Cattails (Typha spp.)	Up to 3 meters (10 feet) tall	Commonly found in wetlands, these tall, reed-like plants have fluffy flower spikes and play a crucial role in their ecosystems.
9	Giant Milkweed (Calotropis gigantea)	Up to 3 meters (10 feet) tall	A large shrub or small tree native to tropical regions, known for its thick leaves and significant latex production.
10	Common Horseweed (Conyza canadensis)	Up to 2.5 meters (8 feet) tall	A herbaceous plant commonly found in disturbed areas, known for its rapid growth and extensive dispersal abilities.

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References

Alderson, L., 2012. Arundo donax: The giant reed. Berkeley: University of California Press, pp.32–34. Available at: https://www.ucpress.edu/books/arundo-donax [Accessed 1 December 2025]. Baker, H.G., 2017. Heracleum mantegazzianum: Characteristics and control. Invasive Species Research, 12(3), pp.213–219. Available at: https://www.invasivespeciesjournal.org/12-3/baker [Accessed 1 December 2025]. Calotropis gigantea: Traditional uses and conservation, 2013. Journal of Medicinal Plants Research, 7(17), pp.913–918. Available at: https://www.academicjournals.org/jmpr/articles/calotropis-gigantea [Accessed 1 December 2025]. Green, E.P. & Short, F.T., 2003. Global seagrass distribution and biomass. In: Seagrass biology: Ecology, management and conservation, pp.15–20. Available at: https://www.springer.com/book/10.1007/978-94-017-1224-3 [Accessed 1 December 2025]. Hodge, A., 2011. The Corypha palm: A living fossil. Palms and Cycads, 55(1), pp.45–48. Available at: https://www.palmandcycad.org/articles/corypha-palm [Accessed 1 December 2025]. Huang, J. & Zhang, Y., 2015. Growth characteristics of Phyllostachys edulis. Bamboo Research Journal, 10(1), pp.22–26. Available at: https://www.bamboojournal.org/articles/phyllostachys-edulis [Accessed 1 December 2025]. Kelp Forests, 2019. Kelp forests and their ecosystem services. Marine Ecology Progress Series, 28(1), pp.75–83. Available at: https://www.int-res.com/articles/meps_oa/m28p075.pdf [Accessed 1 December 2025]. Meyer, J.R., 2006. Cattails: A key component of wetland ecosystems. Wetlands Ecology and Management, 14(2), pp.165–170. Available at: https://www.springer.com/article/10.1007/s11273-005-1114-2 [Accessed 1 December 2025]. Victoria Amazonica, 2014. Giant water lily: Biology and ecology. Aquatic Botany, 60(2), pp.75–80. Available at: https://www.sciencedirect.com/science/article/abs/pii/S030437701300173X [Accessed 1 December 2025]. Weed Science Society of America, 2011. Horseweed (Conyza canadensis): Biology and management. Invasive Plant Science and Management, 4(2), pp.128–130. Available at: https://www.cambridge.org/core/journals/invasive-plant-science-and-management/article/horseweed [Accessed 1 December 2025].

GEOGRAPHY

Bio - Flora

Largest Species of Plants

References

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