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Proven Winners plants were featured at the 132nd running of the famed Kentucky Derby in May of 2006.
Essential elements for plant nutrition include nitrogen,
phosphorus, potassium, calcium, zinc, copper, molybdenum,
magnesium, iron, sulfur, manganese and boron. They come
from the soil and from applied fertilizer. Plants obtain
carbon, hydrogen and oxygen from the air or through the
soil.
