Gardening Terms

Glossary of Terms

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illuviation
The accumulation of leached materials such as clay, iron, or organic matter into a lower soil horizon. Learn more.

imbricate
Overlapping in arrangement, like roof shingles or scales. Learn more.

immatures
the larval or nymphal stages of insects before they reach adulthood. Learn more.

indehiscent
A fruit that does not open at maturity to release its seeds. Learn more.

indeterminate growth
Growth that is not genetically limited, continuing throughout the life of the plant. Learn more.

indigenous
Native or naturally occurring in a particular region. Learn more.

infection
the invasion and multiplication of a pathogen inside host tissue. Learn more.

inflorescence
The arrangement or cluster of flowers on a stem. Learn more.

insect gall
Plant swelling or deformation caused by insect activity such as egg laying or feeding, often species-specific. Learn more.

insectary
A habitat or structure designed to attract and support beneficial insects. Learn more.

insecticidal soap
A mild pesticide made from potassium salts of fatty acids, used to control soft-bodied pests like aphids and mites. Learn more.

integrated farming
A system that combines crop and livestock production to maximize efficiency and reduce waste. Learn more.

integrated nutrient management
The balanced use of organic and inorganic fertilizers to sustain soil fertility and productivity. Learn more.

integrated pest management (ipm)
A sustainable pest control strategy combining biological, cultural, mechanical, and chemical methods. Learn more.

internode
The stem segment between two nodes where leaves and buds arise. Learn more.

invasive
Referring to non-native plants that spread aggressively in a new environment. Learn more.

invasive species
Non-native organisms that spread rapidly and harm ecosystems or economies. Learn more.

involucre
A whorl of bracts beneath a flower cluster. Learn more.

iron chlorosis
Yellowing of leaves due to iron deficiency, common in alkaline soils. Learn more.

irrigation
The artificial application of water to land to assist plant growth. Learn more.