Factors influencing the location, composition and overall design of herbaceous plantings in relation to spatial and other site-characteristics have previously been referred to in the section ‘Overall design considerations’. Often, there will be gradients across a site generated by factors such as light-shade, soil moisture and user patterns. Planting design generally needs to respond to these gradients, as
Distribution patterns in seminatural vegetation. Hebe sub— alpine scrub and grassland in New Zealand
Similar principles applied in designed herbaceous vegetation in a German park
well as to more abstract design notions if it is to be sustainable, i. e. shade-tolerant communities need to be placed in shade, wet-tolerant communities in wet areas, and so on. Within each of the community types that this process generates, decisions have to be made on the spatial arrangement and the density of the various species, and their percentage contribution to the planting mix.