Dictionary
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Word	Description
Panicle	A loose irregularly compound inflorescence with pedicellate flowers.
Papillae	Protuberances that appear from the petals as in various species of Lilium. Thought to be an aid for insects (needed for pollination)to land on.
Parrot group	Single flowered cultivars. Late flowering. Mainly long stemmed.
Peat moss	Partially decomposed sphagnum moss, often added to soil to increase moisture retention.
Pedicel	A tiny stalk, a footstalk; the support of a single flower.
Peduncle	A flower stalk.
Pendant	Hanging downward.
Perennial	Any plant that lives more than three years and does not die after flowering once. Usually applied to herbaceous plants.
Perennializing	The ability of a bulb to flower for more than two years in a row.
Perianth	The outer, usually the showy part of a flower.
Perianth tube	Tube formed by the perianth segments, instead of their being free.
Petal	A division of the corolla; one of a circle of modified leaves immediately outside the reproductive organs, usually brightly colored.
Petaloid	Like a petal, various parts of a flower adapted to give the appearance of a petal.
Petiole	The stalk of a leaf.
pH	Abbreviation of potency of Hydrogen. It is used to measure the acidity or alkalinity of soil, compost or water, with 1 being extremely acid and 14 being extremely alkaline, neutral being 7.
Phosphorus	Major plant nutrient especialy important for plants where flowering is the main interest. Plants also need Phosphorus for a strong root system.
Photosynthesis	The process by which the chloroplasts in plant cells use sunlight to convert carbon dioxide from the air with water vapor to form carbohydrates that are the basic foodstuff for the growth of plants.
Pistil	The female sexual organ of a flowering plant, comprising the stigma, style and ovary.
Pollen	The spores, male, borne by the anthers.
Pollination	The transfer of the pollen to the female stigma.
Potassium	Major plant nutrient especialy important for the strength of roots and stems. Plants need Potassium (Kalium) for firm growth and resistance to disease and cold.
Pound	Anglosaxon measurement of weight. Equivalent to 450 gr.
Prechilled	Treatment given to bulbs so that they can be planted in warm regions.
Primary colors	The colors yellow, red (magenta), and blue (cyan) from which it is possible to mix all the other colors of the spectrum-- also known as the subtractive or colorant primaries.