Garden Deifinitions (J-M)

Juvenile
Plants which have a distinct early phase, when either the habit, leaf shape or some other characteristic differs from those of the adult. Eucalyptus tress commonly bearjuvenile and adult leaves.

Lateral
A stem or shoot that branches off from a bud in the leaf axil of a larger stem.

Leader
The main stem (or stems) of a tree or shrub that extends the existing branch system.

Leaf-Mould
Partially decayed dead leaves which have broken down to a flaky condition resembling peat. Oak and beech leaves are the most suitable materials.

Lime
Calcium, a chemical used in horticulture, particularly to neutralise acid soils.

Loam
A reasonably fertile soil that is neither wet and sticky, nor dry and sandy. It is moisture-retentive and contains a blend of clay, silt, sand and hummus, and is rich in minerals.

Lobe
Descriptive of leaves, stipules, bracts or petals that are cleft into separate areas that are still united by part of the surface.

Maiden
A nursery term for a young grafted tree in the process of being trained. Applied particularly to one year old fruit trees.

Monocarpic
A plant which dies after flowering and seeding. Annuals and biennials are true monocarpic plants, but the term is also applied to perennial plants which grow for a number of years before flowering and then dying.

Monocotyledon
A group of flowering plants that have only one seed leaf in each mature seed.

Monoecious
A plant that bears bisexual flowers or separate male and female flowers on the same plant; for example, corylus (hazel) and juglans (walnut).

Mulch
A layer of organic matter, such as decayed manure, leaf-mould, garden compost, straw or composted bark, which is spread on the soil around the plants. A mulch conserves moisture in the soil, adds nutrients and suppresses weeds. The term is also used for inorganic material including gravel and black polythene sheeting.