The aesthetic of the Bonsai pays much attention to the harmony of heaven and earth in one container. As such, plants are selected so that they are mainly consisting of flowery bushes and similarly colourful shrubs. According to the Japanese, the bonsai is a perfect attempt in evoking a plant's essential spirits.
Bonsais are also very delicate to environmental factors. You don't just plant them, leave them under the sun and water them once in a while and hope that they live. A bonsai gardener needs to patiently check every part of the plant's surrounding environment if they want to ensure that the bonsai tree doesn't