This experiment sought to establish a connection between short term growth in Salvia leucophylla found in Southern California and nutrient availability in the soil. It was hypothesized that adding artificially produced nutrient mix Miracle Grow would increase the strength of the leaves in the herb after one week of addition. Newer leaves were tested in the Instron device for tensile strength after one week, and after data analysis, it was concluded that there was no difference in tensile strength of leaves treated with fertilizer compared with leaves without fertilizer.
Lindahl, Tawny; Buie, John; and Uemura, Eiichiro, "Effect of Fertilizer on Leaf Tensile Strength in Salvia Leucophylla" (2010). Pepperdine University, Featured Research. Paper 19.