Home gardening in the 21st century, like all forms of agriculture, involves environmental revision. This ranges from demanding systems such as greenhouses, where all facets of plant life cycle are handled, to massive systems such as fruit orchards, which may receive very little care after planting. Home gardens are places where innovation is fostered. The market and technical developments have all benefited home gardens. Innovation and trade have been directed to many products being adapted in home gardens, some even after for cropping in bigger fields.

Breeders of livestock and plants have for many centuries chosen lines for small-scale production. This access to the diversity of genetic resources enhances productivity and alternatives. Technology, such as inexpensive polythene film, can be used to better developing conditions. Products and practices can be chosen to suit alterations in market opportunities and household needs. Agrochemicals indeed have a place in agriculture, but natural production practices are favored by the closeness of gardens to homes, community ecological fears and opportunities to have fresh food available every day. Modern increases in market demand for naturally-grown foods have allocated to innovations in production technology appropriate for small entrepreneurs and home consumption.

Climate, trade and local food preferences influence regional differences in home gardens. The organically high biodiversity of select tropical areas, combined with long exposure to trade routes, has led to high diversity of animals and plants and the existence of garden fish ponds. In Java, Indonesia, Sri Lanka and Kandy, traditional gardens - loosely administered, multilayer agro-forestry gardens- use ten or more different species to cultivate food from below ground upwards: root crops, leaf vegetables, low trees, climbing vines and emerging canopy trees. These agro forestry gardens are widespread where competition for land is demanding. Such multiplicity of fresh food evaporates when changes in employment patterns, economic policy and increasing population impinge on traditional land use.

In certain regions of China, the demands of high population and partial availability of land and nutrient resources have imposed innovation and vigor in closely managed gardening systems. In several cases, ten crops can be reaped from a garden bed in a year. In spite this intensity, gardeners have used natural practices so well that fields close to Chengdu nurtured during the Han dynasty are still abundant after 20 centuries of incessant use.

In other regions, these pressures, combined with changing market mandates and the introduction of agro-chemicals without ample advice and training, have directed many farmers to use procedures that are not part of their customary local knowledge. This has resulted in cases of poisoning from pesticide remains, toxic nitrate echelons in groundwater and the erosion of soil lushness that has made gardening hopeless, specifically in urban areas. Generating a livelihood from the soil continually utilizes a sometimes delicate environmental balance.