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A term to describe a plant that completes its life cycle (germinating, growing, flowering, setting seed and dying) within a single growing season.
An annual plant, the seeds of which can tolerate sub-zero winter temperatures and whose seedlings can survive spring frosts.
Fungus that causes disease in a wide array of herbaceous, annual and perennial plants. Characterised by a grey mold, botrytis infections are common in cool, damp spring and summer weather.
Metallic element essential in the production of chlorophyll in plants. Magnesium deficiency can stunt development, but may be combated by an annual application of foliar feed.
A term that usually refers to non-woody plants that live for more than two years or three seasons. Flowering annually, perennial plants tend to die down during the winter, but have roots that will survive low temperatures.
and biennials. Summer bedding plants include hardy and half-hardy annuals, tender perennials and summer-flowering bulbs.