De-thatching – When the clippings/bulk are purposely removed from the lawn so that the grass can receive water more easily and grow better.

Excelsior – Soft wood shavings for stuffing.

Flail Mowers – A type of mower where the blades are on a cylinder (as opposed to a disk with a regular mower,) and the blades rotate from top to bottom.

Floret – One of the small flowers forming the head of a plant.

Frost Heaving – A bulge in the ground or pavement caused by the freezing of moist earth.

Fungicides – Substances that destroy fungi.

Glumes – The husk of grasses.

Grading – To make level or evenly sloping.

C

Caryopsis – Small dry fruit with the thin pericarp (wall of the ovary) adherent to the seed.

Compaction – When something is closely packed or condensed.

Compost – A mixture of decomposed organic matter for fertilizing soil.

Core Aeration – Using a machine to remove a core of soil out by use of a hollow cylinder.

Core Aerify – The removal of cores of soil from the lawn, so that the soil can receive more water and air, which will help it to grow better.

Cores – The plugs of soil that are removed when you Core Aerify.

Crown – Top part of a plant.

B

Blade – Straight narrow leaf of grass, or associated with a mower or roto-tiller, the “blades” that cut the grass or do the dethatching.

A

Aeration – Introducing air into the soil by making holes in it or pulling cores of soil out of it.

Aerification – The mechanical removal of soil cores.

Algae – Any of a group of chiefly aquatic lower plants without root, stem, or leaves, classified by color.

Aphids – Any of various small insects, such as the greenfly, that suck the juice of plants.
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Appressed – Lying close and flat against, as a bud against a twig.

Auricle – Ear-shaped appendage

Awnless – Without the beard or bristle-like appendage of the outer glume of numerous grasses.

Axillary – Springing from, or positioned in the angle formed by the upper side of a branch with the stem or trunk to which it is attached.