Horticultural therapy can be defined as a process by which individuals may improve well-being using the garden environment by passive involvement, through stimulation of the senses, or by active involvement, through the practice of horticulture (Photo 1.4). Taking place in therapeutic gardens, horticultural therapy has its origins in the rehabilitation of British and American soldiers returning from the Second World War. It has a strong focus on healing effects of meaningful activities in the pleasant environment offered by a garden, such as weeding, raking and sowing. This shows its close links with occupational therapy. Distinct values of horticulture to support the healing process include people’s physical dependency on plants (related to harvesting crops for food and the like), observing beauty, nurturing of life, and social interaction.