The trees grow very quickly, especially if given plenty of fertilizer and water. They can tolerate salt spray, though they don’t do well with salty soil. They are hardy to USDA zone 10a, or about 28 F. Royal palm care can be tricky, as the trees are somewhat prone to disease and mineral deficiency, but they are also relatively tough. This eliminates the need for pruning, but because of their height and the sheer size of the leaves, they can pose a real danger to pedestrians below. The trees are self-cleaning, which means the naturally dying leaves fall from mature trees at a rate of about once per month. The leaves are 10 to 15 feet (3-4.5 m.) long and can weigh as much as 50 lbs. Royal palm trees are very large, reaching 50 to 80 feet (15-24 m.) in height and 15 to 25 feet (4.5-7.5 m.) in spread. Some classify it as the genus Roystonea, but others say it’s just the species Roystonea regia (both the genus and species imply royalty, so it’s hard to commit). Keep reading to learn more about royal palm care and tips for growing royal palm trees. While they have some specific care requirements, these trees are impressive specimens that are worth the trouble for the way they stand out. Royal palms are the quintessential tall, straight palm tree – the ones you expect to see lining the street in southern Florida or California.
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