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Gardeners' glossary A-Z

Ii

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.

Imbricate

Overlapping, as in the scales of fish or roof tiles. Many tree buds have imbricate scales to protect them.

Incised

Used in reference to leaf margins, stipules or bracts that are cut or slashed.

Incurved

Bent or curved inward, eg, the petals of a chrysanthemum.

Indehiscent/indehiscence

The term for fruits that do not open or split to release seeds. Also see Dehiscence.

Indumentum

A covering of fine, soft hairs, as found on foliage.

Inflorescence

The flowering part of a plant, or mode of flowering. Inflorescences may be of many kinds: spike, panicle, umbel, capitulum, corymb, cyme and spadix.

Inorganic

Refers to non-animal, non-vegetable substances that do not contain carbon. Often applied to chemical products used to improve the soil.

Insecticide

Any chemical preparation used to repel or destroy insects. May take the form of liquid, powder or smoke.

Insectivorous

An insect-eating plant.

Intercropping

The practice of growing two crops on the same piece of ground, simultaneously. Where a fast-growing crop is grown between slower-maturing plants, or in succession.

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