Scleranthus Perennis (Paperback)

High Quality Content by WIKIPEDIA articles! Perennial knawel (Scleranthus perennis L.) is a perennial herbaceous plant of the carnation family. It grows on sandy, dry, acidic soils. It can grow up to 15 cm high and has white flowers of 2-5 mm. The plant used to be economically significant as the major host plant of the Polish cochineal. A herbaceous plant (in botanical use simply herb) is a plant that has leaves and stems that die down at the end of the growing season to the soil level. They have no persistent woody stem above ground. Herbaceous plants may be annuals, biennials or perennials.