10 to 15 years. According to the query of the Plant Home website, the saponaria tree is a long-lived tree with a lifespan of up to thousands of years. The growth rate of the saponaria tree is relatively slow. Normally, a young sapodilla tree needs 6 to 8 years to grow. It will bloom and bear fruit, and its value can increase to 5,000 yuan in 10 to 15 years.