Nutritional Deficiencies in Palms





Harrell’s Technical Manager Marshall Horsman explains various nutritional deficiencies affecting palms, and how to identify and treat these problems.

Marshall Horsman is a Technical Manager for Harrell’s, specializing in tropical horticulture. He has been studying palms and horticulture since the age of 13, when he began traveling to remote areas of Latin America and the Caribbean with his father to collect rare palm seeds and orchids. He studied Ornamental Horticulture at the University of Florida and then spent 16 years as a Horticulture Consultant with A&L Labs. He has consulted numerous nurseries and Caribbean resorts, including the Atlantis Resort. He has maintained palms in Africa, the Bahamas, Costa Rica, the Caribbean, South Florida and other locations. His passion is his 80 acre palm arboretum in Southern Costa Rica, where he has over 200 species of palms.



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