The buildup of phosphorus in lawns, gardens, pastures, and croplands can cause plants to grow poorly and even die. Excessive soil phosphorus reduces the plant's ability to take up required micronutrients, particularly iron and zinc, even when soil tests show there are adequate amounts of those nutrients in the soil. Phosphorus buildup is caused by excessive use of inorganic fertilizer or the use of composts and manures high in phosphorus. High soil phosphorus levels also can threaten streams, rivers, lakes, and oceans. This fact sheet discusses how to identify excessive phosphorus buildup and how to correct it. (2 pages)
More choices in Crops & Produce
Today Master Gardeners are active in all 50 U.S. States and eight Canadian provinces. The heart of the Texas Master Gardener program is the dedicated, passionate volunteers who are willing to share their knowledge with anyone interested. 2019 Edition.