GrassCity Sucks
Active Member
Some plants need copper, and a copper deficiency can prevent proper flowering. I know some plants really need it, like chrysanthemums. Some plants find copper toxic. I just found an interesting pdf about what metals plants need and how to tell when, and mentions copper:
http://www.ars.usda.gov/sp2UserFiles/Place/36071000/Posters/Frantz180082_2006_HealthyPlant.pdf
Extract:
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Why do plants need copper?
Copper plays an important role in quenching the radicals produced during biochemical processes. It is also
a component of proteins and enzymes that are critical in producing ATP the “Biological Currency’. Copper
is required for lignification, especially xylem formation, and its mobility is moderate to immobile within the
plant.
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Well, I read on almost all my nutrient bottles (proganics is my usual) .. there's always copper in the fertilizer. Copper Sulphate. I know I know, though, it's a different FORM of copper.