Ken Thompson's book 'No Nettles Required: The truth about wildlife gardening' He confirms the approach which Chris Baines had promoted in 'How to Make a Wildlife Garden'. Some ecosystems may benefit from any increase in biomass, from the introduction of certain non-native species, or any increase in biodiversity. In the case of disturbed areas some exotic/non-native plants may fare better than the displaced, native inhabitants, in the process increasing the biodiversity and biological biomass. Types In general Native gardens include the following kinds: Fully forested with leaf debris on the forest floor, including coarse woody debris if possible; Desert with arid loving plants and succulents; Grassy meadow with a variety of wildflowers and water features; Lowland savanna with grasses and native trees; and Oceanic dunescape with tall, salt tolerant grasses. Wildflower gardens "Wildflower" in some nations denominates the numerous showy flowers from some drier climates, most notably southwest Western Australia, southern Africa, and North America. Some wildflower gardens attempt to recreate a prairie, including native grasses along with flowering plants, i. e. forbs. Such gardens benefit the local wildlife, often attracting birds, butterflies, and small mammals. By carefully choosing the plants for the garden, some of these animals can be encouraged to visit the garden. One popular type of wildflower garden specializes in attracting butterflies and is thus denominated a "butterfly garden". The native plants cultivated in wildflower gardens often have deep roots, and therefore are effective selections for absorbing surface runoff and allowing the water to infiltrate into the local water table. Wildflower gardens cultivated for capturing runoff in this mode are denominated "rain gardens". Rain gardens Rain gardens absorb rainwater from gutters & impervious surfaces and function much better when planted with native plants which tolerate the alternation of flooding and drying. Advantages no fertilization required no additional water more water available for other uses and other people zero to near zero work needed for maintenance no lawn mowing erosion reduced to a minimum natural landscaped plants take full advantage of rainfall when water restrictions are implemented, native landscaped plants will survive, while other plants may not increased habitat for native flora and fauna increased beneficial insect population reduces pests where heavily forested, provides shade on homes and businesses saving energy native plants rarely become invasive Disadvantages not good for outdoor games that require a manicured turf. in certain areas, wildfires or brushfires may be of great concern.