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==Natural Sources of Potassium for Plants== Gardeners can provide potassium to their plants through various natural sources: ====Wood Ashes==== Wood ashes from untreated, unpainted wood are rich in potassium and can be applied sparingly to garden soils. However, wood ashes also contain calcium and can raise soil pH, so they should be used cautiously, especially in alkaline soils. ====Compost==== Well-decomposed compost can provide a slow-release source of potassium and other essential nutrients. Incorporate compost into garden beds before planting or use it as a top dressing around established plants. ====Greensand==== Greensand is a naturally occurring, mineral-rich sand that contains potassium, iron, and other trace elements. It can be mixed into garden soils to provide a slow-release source of potassium. ====Kelp Meal==== Kelp meal is derived from dried, ground seaweed and is rich in potassium and other trace minerals. It can be incorporated into soil or used as a top dressing. ====Cover Crops==== Certain cover crops, such as [[Sorghum|sorghum]], [[Alfalfa|alfalfa]], and [[Clover|clover]], can accumulate potassium in their tissues. When these crops are tilled into the soil, they release the potassium for subsequent plants to use.
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