Soils within forests not static but rather are dynamic in space and time, and they play key roles in plant growth and species’ distributions within the forest. The present study examined variations in soil physicochemical properties in space and time and their impacts on the growth of 3 Rhododendron species in a temperate forest of the eastern Himalayas. Soil samples collected from different soil depths were analyzed on a seasonal basis for 2 consecutive years from 3 different study sites along an elevational gradient. To study the impacts of soil properties on growth, 3 Rhododendron species were selected: R. kendrickii, R. grande, and R. mechukae. The growth of these 3 species was studied through random tagging at each study site. Seasonal growth in height and collar diameter was recorded at 4-mo intervals for a period of 2 yr. Correlation analyses were conducted to understand the impacts of soil parameters on rhododendron growth. Soil physicochemical properties showed significant variations with depth, season, and elevation. The growth in height of R. kendrickii and R. grande showed positive correlations with pH, while that of R. mechukae exhibited a negative correlation. On the other hand, pH exhibited positive correlations with growth in collar diameter for all selected rhododendrons. Moreover, growth in height and collar diameter of all selected rhododendrons showed negative correlations with the soil moisture content, organic carbon, and total nitrogen. Available phosphorus and exchangeable potassium exhibited positive correlations with growth of both height and collar diameter of all selected Rhododendron species. There was seasonal variability in nutrient availability at different elevations. The soil was more acidic at higher elevations, and organic matter accumulation affected the availability of various nutrients required by the plants. Further, the growth of the selected Rhododendron species was affected by the nutrient availability at different study sites.