In this experiment, two species of Vinca major 'Variegata’ and Trachelospermum jasminoides 'Variegatum’,which belong to the same family of Apocynaceae were studied. Five pots are randomly selected for repeat testing each year. The above-ground biomass, root to shoot ratio, root biomass and morphological indicators such as root length, diameter, surface area, volume, root tip number, and root forks were selected to analyze the changes in root architecture characteristics and growth dynamics with increasing seedling age. The purpose of this experiment is to prolong plant life for long-term utilization, and to develop low-maintenance technologies. Quantifying the time node and measurement indicators of plant growth and degradation due to root limitation. The results showed that: 1)The root biomass and root length, root surface area, root volume, number of root forks, and number of root tips of the two plants all reached their peak in the third year after the plants were put on the wall and then began to decline, and the 3rd year can be used as a measurement point for the degradation of plant root growth restricted by the root domain; the root to shoot ratio was delayed by one year to reach its lowest level by 2020, reflecting that the restricted growth of the underground root system actually preceded the observed degradation of branches and leaves.2) Root length, root surface area, root volume, and root tip number can be used as measures, and root volume can be the main measure in terms of the significance of variability and correlation compared. The percentage of root volume of the 2 plants with restricted growth was 1.8% and 2.2%. 3) Both two species' root to shoot ratio and morphological indicators exhibited consistent trends, however the variation of Vinca major 'Variegata’ was larger than Trachelospermum jasminoides 'Variegatum’; the average root diameter of Vinca major 'Variegata’ displayed a continuous fluctuation pattern distinct from that of Trachelospermum jasminoides 'Variegatum’. The similarities and variations between the two species' reflect to the root domain's volume limitation: Trachelospermum jasminoides 'Variegatum’, the climbing type with well-developed adventitious roots adapts to environmental changes through inter-grade turnover of root diameter when limited by the root domain; Vinca major 'Variegata’, whose root system is concentrated in a fixed container, adapts to environmental changes through inter-grade turnover of root diameter when limited by the root domain.