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What do you feed rhododendrons?

Updated: 4/28/2022
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12y ago

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Rhododendrons are not heavy feeders. They like an organic source of nitrogen since chemical nitrogen can destroy microorganisms in the soil that help rhododendrons extract nutrients from the soil. Other than that they need an acidic balanced fertilizer with trace elements such as iron, phosphorus, magnesium, etc. Liquid fertilizers are not a good choice since they contain high amounts of chemical nitrogen. Some good rhododendron fertilizers contain cottonseed meal as an organic source of nitrogen.

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