Usage examples for biennial
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Being a biennial plant, it is not poisonous in this country to cattle during the first year, if they eat its leaves. – Herbal Simples Approved for Modern Uses of Cure by William Thomas Fernie
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Strong- growing perennials, asters or the biennial Rudbeckia triloba, are good for this purpose. – Making a Garden of Perennials by W. C. Egan