Hardy perennial
A hardy perennial , or perennial plant , is a Plante living more than two year S, but which saw often much longer, the two years limit being fixed to separate the long-lived ones from the bi-annual . The expression “hardy perennial” is more often used by the Jardinier S, to indicate a herbaceous plant which resists the rigors of the bad season, that it acts of the Gel of the Hiver or the dryness of the canicular summers. In horticulture, this expression is opposed to “annual Plante” or “bi-annual Plante”. It does not apply normally to the woody plants (trees, shrubs, shrubs) which are long-lived by definition.
The hardy perennials can preserve their foliage at the bad season, but generally this one is desiccated, the plant surviving only thanks to the stock remained in the ground. Certain hardy perennials are it only under the climatic conditions adapted to their habitat of origin. Thus hardy perennials of tropical origin can be cultivated in moderate climate or cold only like annual plants, or orangery or hothouse plants, i.e. put at the shelter during the cold season.
Perennial” or “perennating term the “(E)” is more often employed by the Botaniste S, to indicate a live plant long enough.
The long-lived character of these plants is the result of various biological “strategies”, making it possible the buds to survive the bad season. These strategies were classified in the Classification of Raunkier in as much of standard biological. The body of survival perhaps a bulb (case of the tulip) or a corme, a tuber, rhizomes (case of the Géophyte S), buds hidden in the ground (case of the Cryptophyte S), etc
Simple: Perennial
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