Formula: a recipe for the making of a compound; for example, fertilizer or spraying compounds.
Fungicide: a substance used to kill or prevent the growth of fungi; for example, Bordeaux Mixture or copper sulphate.
Fungous: belonging to or caused by fungi.
Fungus (plural fungi): a low kind of plant life lacking in green color. Molds and toadstools are examples.
Germ: that from which anything springs. The term is often applied to any very small organism or living thing, particularly if it causes great effects such as disease, fermentation, etc.
Germinate: to sprout. A seed germinates when it begins to grow.
Girdle: to make a cut or groove around a limb or tree.
Glacier: an immense field or stream of ice formed in the region of constant snow and moving slowly down a slope or valley.
Globule: a small particle of matter shaped like a globe.
Glucose: a kind of sugar very common in plants. The sugar from grapes, honey, etc. is glucose. That from the sugar cane is not.