PUBLIC HEALTH ENGLAND / SCIENCE PHOTO LIBRARY PUBLIC HEALTH ENGLAND / SCIENCE PHOTO LIBRARY
Garden plant food. Box of a garden plant food fertiliser containing nitrogen. Nitrogen is one of the elements that plants require in large amounts to ensure healthy growth. Some of the fertiliser is seen in a petri dish at lower right. This is Sulphate of Ammonia plant food from Westland Garden Health. Photographed in the UK.
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