Megumi Oshima was born in Saitama prefecture. Raised among abundant nature in the countryside near the Tonegawa river, Oshima became familiar with plants. While working for a production company, she started to grow bonsai and kokedama on the balcony of her Tokyo apartment. Oshima left her production company job and began working in garden management for flower markets and hotels. In 2006 she opened garden store Midoriya Nicogusa in Kichijoji, Tokyo, and began running workshops on bonsai and kokedama. Oshima is a plant consultant and interior coordinator. Hideshi Kimura is a member of Japan Horticulture Society Tray Landscape Artis. After obtaining his bonsai master license, he began making moss tray landscapes more than 20 years ago and to date has made more than 2000 works. Not limited to bonsai pots, he has received acclaim for his original designs, which incorporate driftwood, bamboo and so on as receptacles. Kimura runs moss tray classes and is an instructor at Minamisunamachi Culture Center in Tokyo's Koto ward.