Ключевые слова: africa, agriculture, americas, asia, asteraceae, biology, botany, bush, canada thistle, chromolaena, ecology, ecosystem, environment, family, fastgrowing, flora, flowers, forest, forestry, greenery, growth, herbal, horticulture, jack, landscape, leaves, medicine, native, natural, nature, odorata, perennial, plant, plantation, pollination, preservation, propagation, seeds, shrub, species, stem, subtropical, sustainable, thistle, tropical, vegetation, weed, wild, wild grass, wilderness,