- - - - Abstract. Improper Seed Germination (SG) of plants is an undesirable factor in agriculture, pasture and rangeland restoration operations. Therefore, researchers are trying to examine different techniques to facilitate germination and improve seedling establishment. Facilitators play an important role in managing and improving growth processes, through accelerating SG. Towards this, the key aim of this study is to review different types of facilitators and their effects on the germination, growth, and establishment of plants. Results showed that: firstly, the most used method by various facilitators was seed pretreatment. Secondly, most of the germination tests for nanoparticles have been done in laboratory environments. It is necessary to examine these facilitators in the field and natural environments to determine their real efficiency and effectiveness. Thirdly, it seems that the use of effective microorganisms is much more cost-effective than nanoparticles due to the ease of use in large areas, cheaper price and higher efficiency. The general positive effects of facilitators include improving environmental stress resistance, plant growth, surface coverage, root depth, root length, the fresh and dry weight of root, SG, crop quality, and yield. Their adverse effects also differ depending on the various characteristics of both facilitators and plants. Manuscript profile