Multiple uses of native or hardy low-maintenance plants of the south of Brazil in landscaping.
Multiple uses of native plants are appropriate for neighborhood squares, workers' gardens, green roofs and degraded areas, whereas the use of plants from hydromorphic environments applies to landscaping in legally protected areas of Brazil (permanent preservation areas and riparian forests), like phytoremediation plants from contaminated areas, generating products for crafts and floriculture. In this study, we seek to present a problematic studied at University of Passo Fundo, Brazil, which is recovery of little-known native species or those in risk of extinction, and low-maintenance, exotic, wild, non-aggressive species, with reasonable development in degraded locations. Acca sellowiana, Pyrostegia venusta, Eugenia mattosi, Ipomoea purpurea and I. cairica, Pyptochaetium, Elephantopus, Eryngium, Aspillia and Glandularia were studied. Among the low-maintenance exotic plants, the propagation and landscaping use of Talinum, Leonurus, Aptenia, Persicaria, Lavandula and Ophiopogon were studied. Aquatic plants with greatest ornamental potential studied were Erythrina crista-galli, Dicksonia sellowiana, Juncus effusus, Nymphoides and Miriophylum. Only rushes are already valued in floral arrangements and appear in gardens. In general, if there has been no tradition in their use until recently, through lack of Brazilian tradition in the elaboration of small lakes (high cost and technology), currently, this practice is being consolidated in the landscaping market in keeping with existing environmental legislation. Nevertheless, as there is no sale of these species, it is possible that this material is indiscriminately removed from nature. The strategy of the studies undertaken is to evaluate the potential for propagation of rustic species for later use in landscaping when locally crafted substrates are used in semi-protected environments or directly in open air. The hypothesis is that rustic plants, in addition to being beautiful, if better acclimated (even to the local soil), may better meet the new requirements of contemporary sustainable landscaping.