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1 to 10 of 14 glossary items


Planting randomly to give the impression of naturally occurring plants. It's commonly used in the planting of bulbs, especially crocuses and daffodils.


The death of plant tissue. It often takes the form of necrotic spots on leaves.


The honey-like liquid secreted by plants. It's commonly found in flowers, and attracts bees and insect pollinators.


The gland at the base of the corolla, which secretes nectar.


The stiff, spiny leaf found on coniferous trees, such as pine.


Microscopic, unsegmented worms that resemble fine cotton threads. Many are parasitic and feed off plant roots.


Soil with a pH of 7. It's neither acid nor alkaline.


The result of a chemical process by which nitrogen in plant and animal waste is oxidised by soil bacteria. It first changes into nitrites, then into nitrates, which can be absorbed by plant roots. Nitrate of soda is an alkaline fertiliser that's commonly used, and contains 15% nitrogen.


See Nitrate.


A chemical element with the symbol N. Nitrogen is a macronutrient, that - along with oxygen, carbon and hydrogen - is essential for plant growth.

1 to 10 of 14 glossary items