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Hibiscus leaves turn yellow because of pest infestations, diseases and environmental changes such as too little fertilizer or insufficient water. In some cases, yellowing leaves are a perfectly natural response to coolin... More »

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Hibiscus plants need to be pruned back approximately one third of the way down each branch, notes Hidden Valley Hibiscus. Pruning cuts should be made at 45-degree angles directly above nodes, which are the locations wher... More »

Drinking hibiscus tea over a period of 2 to 6 weeks may help lower blood pressure in patients with elevated blood pressure. Other benefits may include lowered cholesterol and treatment of irritated stomach. However, ther... More »

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Birch tree leaves often turn yellow because of chlorosis, which occurs for several reasons. According to the University of Illinois, chlorosis occurs because of an iron deficiency, poor drainage, damaged roots, high soil... More »

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Hibiscus leaves turn yellow in response to stress or as part of the plant's natural life cycle. Old leaves turn yellow and drop off naturally, but sometimes yellow leaves are due to stress caused by factors that must be ... More »

A Chinese pistache tree is an ornamental tree with a broad, bowed canopy that sheds its leaves annually. It requires infrequent watering and is commonly used to provide shade in gardens and along streets. Although Chines... More »

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According to Hidden Valley Hibiscus, the braided hibiscus tree is a tropical plant that requires temperatures of 60 to 90 degrees Fahrenheit to bloom. Providing the tree with proper temperatures and the right amount of w... More »

www.reference.com Home & Garden Gardening & Landscapes Trees & Bushes