The present invention relates to an apparatus, system and method for monitoring plant. A sensor means can be adapted for receiving plant growth information of the plant being received inside a container. An indicating means can be adapted for indicating information of the plant growth information. A wireless communication means can be adapted for transmitting the plant growth information to an external device. A control means can select a working mode of the indicating means and the wireless communication means. Through the cooperative effect of the sensor means, the storage means, the indicating means and the wireless communication means, operators do not have to take along with instruments to perform measurement reading of the on-site plant growth information at a regular time, thereby saving labor cost and time cost of monitoring the plant growth information and improving efficiency of plant monitoring.