Glossary of Terms
A plant that germinates, grows, flowers, produces seeds, and dies in one growing season.
A green pigment found in plant cells that is essential for photosynthesis and is formed only in the presence of light.
The process of transferring pollen from one flowering plant to another to create a hybrid.
A plant variety that has been produced through selective breeding and maintained through cultivation.
The process of removing excess buds from a plant, leaving the remainder to grow bigger.
A lilac bloom is made of groups of small flowers with four or five blossoms on a single stem. Each individual flower is a floret.
Strong plants that can generally flourish outdoors all year round without special protection.
High content of metallic minerals that contaminate soil, water, or air and can affect normal growth in plants and animals.
A cluster of plants or roots with a pile of earth around it.
A cross between two parent plants that are from the same species but don't look exactly like each other.
A shoot or branch of a plant that is set into the ground to take root while still attached to the parent plant.
A small area that has different characteristics from the general area around it.
Any oil made from minerals, such as petroleum.
A green or brown foam used to support flower arrangements and hold moisture.
The slightly decayed remains of sphagnum moss that holds a lot of moisture but has no nutrients.
A plant that dies down to the ground during winter and survives to grow again each spring.
Chemical substances used to destroy pests and control plant diseases.
The process of converting light into carbohydrates that plants require to grow.
To multiply plants by dividing roots, layering, or starting from cuttings.
A chemical that encourages quicker root growth in new plants.
A creeping underground stem, often thick and swollen.
The hardened protective shell that contains the maturing seeds of a plant.
A highly absorbent 'sand' that is used to dry and preserve flower blossoms and leaves.
To support a plant by driving a wooden post into the ground beside it and tying it to the post.
A floret with a five-pointed 'star' shape.
A shoot arising from the underground part of the plant.
Removal of plant materials (shoots, seedlings, flower buds, or fruits) to encourage better size and quality in the remainder.
The first hardy leaves, usually the second pair, on a new plant.
A swollen underground stem, usually with buds, such as a potato.
A mineral from the mica family that can be used as a heat insulator or mulch for plants.
A length of fiber or cloth that feeds liquid from a reservoir to a drier end.
A region that shares similar climatic and rainfall conditions, producing similar growing seasons.