ANNUALS - Plants that have their entire life cycle from seed to flower to seed within a single growing season. All of the plant dies annually. The dormant seed will grow the next season.
Annuals are very seasonal in the Highlands although there are a few that you can grow throughout the year.
All Year - Alyssum, Erigeron, Snapdragons
Spring/Summer - Ageratum, Aster, Begonia, Calendula, Dianthus, Impatiens, Marigolds, Nemesia, Petunia, Salvia and Sweet William.
Autumn/Winter - Bellis Perennis, Ornamental Kale, Polyanthus, Primula, Pansy, Poppy, and Viola.
PERENNIALS - Plants that are around for many growing seasons. Generally the top portion of the plant dies back each winter and regrows the following spring. Many perennial plants do keep their leaves year round and can be uses as borders and groundcovers.
BIENNIAL - Plants which require two years to complete their life cycle.
HERBACEOUS PERENNIAL - a plant whose growth dies down annually but whose roots or other underground parts survive.