The features of analytical and biological methods of environmental monitoring are analyzed. The resource consumption of using the physical and chemical methods of studying the abiotic environment contamination level and the expediency of using living organisms in environmental monitoring are evaluated. The use of biological methods in the environmental control system provides the possibility of the test material analyzing in both natural and laboratory conditions, which greatly expands the possibilities of practical environmental science. The most common and dangerous pollutants of anthropogenic origin that can be effectively metabolized by plant organisms are listed. The perspective of plant objects use as indicators of ecological state of the environment is considered. Advantages of plant organisms as effective indicators of environmental quality in comparison with other living systems are given. Indicators of plant vitality at different levels of the biosystem organization–from molecular to population and species level–are characterized. A comprehensive biomonitoring approach is proposed, which provides a systematic and comprehensive study of plant life processes, adaptive and destructive changes under the influence of adverse environmental factors. The cumulative features of plants are analyzed, three main groups of phyto objects are distinguished: batteries, eliminators and indicators. Possibilities of introducing indicator species for environmental quality assessment and remediant species for environmental quality improvement are described. The advantages of phytoindication comparing with other methods of environmental monitoring are presented. The most informative plant test parameters have been identified using a comprehensive approach to environmental quality assessment. The green areas of urban ecosystems creation, a competent combination of plants in different environmental conditions according to the level of environmental sustainability will effectively combat its contamination and prevent its anthropogenic transformation in the future.