Annuals: Plants which complete their life cycle within a single growing season
Biennials: Plants which live for two growing seasons
Ephemerals: Plants which have more than one life cycle in a growing season; these are often weeds as they increase by numbers rapidly
Herbaceous: A herbaceous plant is a plant that has leaves and stems that die down at the end of the growing season to the soil level. They have no persistent woody stem above ground. Herbaceous plants do not have any woody growth, so all the stems of the plant remain flexible throughout its life.
Old Wood: Usually used to describe stem growth which is more than one season old. This growth can occur by lengthening of the stem or widening the stem.
Perennials: Plants which live for more than two growing seasons
Evergreen: An evergreen plant is described as bearing green foliage throughout the year; continually shedding and replacing leaves.
Deciduous: A deciduous plant is described as shedding all leaves annually at the end of the growing season, and then having a dormant period without leaves.