Magnesium
Magnesium is a metallic component of chlorophyll which helps plants to synthesise sunlight into sugars (energy).
Main shoot
A basal cane or a strong lateral cane.
Margin
The boundary of the leaf.
Margin
The edge of a leaf.
Mature plan
A plant that is old enough to produce blooms and seeds.
Meristem
Any growing point of both root and stem on a plant, where active cell division is taking place. There are both apical and axillary meristems.
Mesophyll
The spongy inner tissue of a leaf, functionally similar to the cortex of stems and roots, where the raw materials - carbon dioxide and water vapor are held during the process of photosynthesis within the adjacent palisade cells.
Microclimate
The climatic conditions of a particular garden or site, taking into account degree of shade, wind, humidity, and rainfall.
Midrib
The primary rib or mid-vein of a leaf or leaflet.
Midrib
Primary or central vein of leaf, it is usually a continuation of the petiole.
Monocot
Any plant that has only one cotyledon, or seed leaf. See Dicot.
Monoecious
Having separate male and female sex organs on the same plant. See Dioecious
Mulch
A protective covering spread over the soil around the base of plants to retard evaporation, control temperature, or enrich the soil.