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Gardeners' glossary A-Z

Pp

Use our easy-to-understand guide to help out with all those confusing gardening terms. From Acicular to Zebrinus, Annual to Zinc, you'll find a simple explanation below.

Plunge

The act of sinking a pot plant in soil, sand or cinders, to prevent roots from drying out.

Pollard

The practice of pruning tree branches back to the trunk to encourage the production of young shoots and foliage. Often used in the development of ornamental trees.

Pollen

Borne on the anthers of most flowers, pollen are the male sex cells essential for pollination.

Pollination

The transfer of pollen - by insects, wind or hand - to the female stigma, after which fertilisation of the ovule ensues.

Pollinia

A mass of pollen, eg, grains gathered together in a clump, as opposed to being individually enclosed in a sac.

Pompon/pompom

Refers to the flowerhead of blooms, such as the dahlia or chrysanthemum, which is plump and spherical.

Potash

Potassium. Chemical symbol K in the NPK formulae, potassium is responsible for flower and fruit production in plants.

Potassium

See Potash.

Potting

Refers to the transfer of seedlings or rooted cuttings into pots.

Potting on

The transfer of a plant from one pot into a larger one (usually the next size up) to allow more space for root development.

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