A new gardening question of the day appears every day of the year on the front page of Almanac.com. Below is the answer to one of the questions from our Gardening Questions and Answers Archive where you can find over 400 more gardening questions (with answers!).
Why do some leaves on my rhododendron have brown spots?
Random brown spots on older leaves are likely caused by a fungus. Unless widespread, they are not a cause for concern. Some cultivars or hybrids are resistant. Try the cultivars 'Solidarity', 'Caroline', and 'Mardi Gras', as well as the species hyperythrum, yakushimanum or degronianum.
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