Acid: Soil or water with a pH less than 7.0.
Alkaline: Soil or water with a pH greater than 7.0.
Anther: One or more sacs which contain the pollen.
Artificial Light: Light other than that provided by the sun.
Axil: The angle formed at the juncture of the petiole and the main stem.
Bell: Single blossom with a bell-like shape.
Bloom Stalk: Includes the peduncle, pedicel, and flower parts.
Calyx: The cup-like base of a blossom, usually green, which attaches to the pedicel.
Capillary Action: The movement of water upward against gravity as seen in wick watering.
Chimera: Plant or plant part that is a mixture of two or more genetically different types of cells. In flowers, produces a pinwheel color pattern with distinct stripes of color on each petal.
Chlorophyll: The green pigment found in the chloroplasts of cells which absorb light for photosynthesis.
Clone: An identical copy of another, the result of vegetative propagation.
Condition: The cultural appearance of an exhibit at the time of judging.
Chromosome: Microscopic, rod-like structure composed of individual units (genes) which pass on the plant’s characteristics.
Crown: All the leaves which grew from a single growth point.
Crown Variegation (Champion): The variegation is restricted to the center or crown of the plant and turns green as the leaves mature to the outer layers.
Cultivar (Variety): A plant resulting from hybridization or mutation.
Disbudding: Removal of the flower buds or bud stems in order to delay blooming for a later time.
Division: The cutting or gentle separation of two or more crowns.
Double: Blossoms with at least two layers of petals.
Double Potting: The placement of a plant (still in a pot) within a larger pot, with the space between the two pots filled with soil.
Drench: To wet the soil to the point of saturation.
Edged: Lobes of blossoms of any shape which are edged with any color.
Fantasy: Blossoms are speckled, streaked or spotted with contrasting color or deeper shade of the same color.
Fertilizer: A formula of nutrients used to enrich soil and increase productivity.
Flared-top Pot: A pot designed with an extended lip which serves as an additional support for the foliage.
Floriferous: Describes the quantity of bloom on a plant.
Foliage: The leaves of a plant collectively.
Frilled: Blossoms with heavily serrated outer lobes.
Geneva Edged: Lobes of the blossoms are edged in white.
Girl: Leaves with stem growing into the leaf blade causing a distinct lighter color marking at the base, often accompanied with deeply scalloped edges.
Holly: Heavily crested leaf with leaf edges curled forward and back in exaggerated waves.
Humidity: The ratio of water vapor held in the air, beneficial to plant growth.
Hybrid: A plant grown from seed as a result of breeding or cross-pollination.
Hybridization: Transferring pollen from the stamen to the stigma, often from one plant to another.