Define herbaceous perennials

Annuals are plants that go through their entire lifecycle in one growing season.

Hardy annuals are plants that go through their entire life cycle in one season and that can be sown outside in the open garden in spring where it is to flower, for example, Centaurea cyanus – cornflower.

Half-hardy annuals are plants that die if exposed to the cold, so they can’t go into the garden until after the last frost and should be sown indoors in spring. They’ll keep going until killed by the first autumn frost. For example, Cosmos bipinnatus

Biennial are plants whose lifecycle spans two years, so they flower and produce seeds in their second year. A familiar biennial is foxglove, Digitalis purpurea. Some plants grown as biennials are, botanically speaking, short-lived perennials, for example, sweet william and wallflower. These plants tend to be dug up after flowering simply because they don’t perform well the following year, or become too untidy.

Perennials are plants that can survive frost and live for more than two years.

Half-hardy perennials (tender perennials) are plants that will not survive frost and must be brought indoors during the winter, for example, Pelargonium grandiflorum ‘Regalia Lilac Star’.

Woody perennials are plants that maintain live woody stem grow at the end of the growing season, i.e. exhibiting secondary growth. e.g. lilac, Syringa vulgaris.

The RHS examiners note that it is important to mention secondary growth in any definition of wood perennials.

Herbaceous perennial are non-woody plants that die back to a rootstock each autumn and regrow in the following spring. For example, hop, Humulus lupulus.

(Note that in exam answers asking about herbaceous perennials, the examiners note that the word ‘non-woody’ is important.)

Ephemeral is a plant that has several life cycles in a growing season and can increase in numbers rapidly, for example, groundsel (Senecio vulgaris).


Perennial Plant Sale only two days left!!!

2010-04-23 07:09:57 by spazoli

This Friday 23rd and Saturday 24th from 12:00pm to 5:00pm at 8345 West Beloit Road West Allis, WI 53219 We have Hydrangea, Shasta daisy, Dwarf Iris, Day lilly, Dead Nettle, Blue emerald, Lilly of the valley, Iris, Tiger Lilly, Hosta, Liatris, Gladiolus, Paeony and ETC. Come quick selling like hotcakes cause the prices are unbeatable. From $2.00 to $8.00 You shouldnt miss this sale.


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