In this fifth volume of the Philo of Alexandria Commentary Series, originally published by Brill in hardcover, Albert C. Geljon and David T. Runia present the first readable, modern English translation and commentary on Philo’s De plantatione (On Planting). In this allegorical treatise, Philo first turns to theological and cosmological interpretations of Noah’s planting of a vineyard in Genesis 9:20. He then moves to the spiritual quest of advanced souls and those beginning their journey. The commentary pays particular attention to the treatise’s structure, its biblical basis, and its exegetical and philosophical contents.