Mallsai

Inexpensive bonsai trees often sold in chain stores and gift shops are derisively referred to as "mallsai" by experienced bonsai growers, and are usually weak or dead trees by the time they are sold. Often these bonsai are mass produced and are rooted in thick clay from a field in China. This clay is very detrimental to the bonsai, as it literally suffocates the roots and promotes root-rot. Very little if any shaping is done on mallsai, and often the foliage is crudely pruned with little finesse to resemble a tree. Due to the conditions under which they are transported and sold, they are often inadequately watered and are kept in poor soil, usually a clump of sphagnum moss or the aforementioned clay with a layer of gravel glued to the top, which leaves them susceptible to both drying and fungal infections. Some "mallsai" can be resuscitated with proper care and immediate repotting, although this is reportedly rare. This top layer of glued-on gravel should be immediately removed once the bonsai is purchased, and the plant should be repotted in a good bonsai soil such as akadama.