String of Turtles Peperomia ProstrataString of Turtles (Peperomia prostrata) has succulent like leaves that resemble a turtles shell. It is native to the rainforest of Brasil. This adorable plant looks best in a hanging pot to let the leaves trail down. This plant is a slow grower, and itll reach full maturity in three to five years. Light: Thrives in bright, indirect light. Temperature: 65 80F and moderate humidity. This Peperomia is sensitive to both extreme heat and cold. Soil: Well