 After one Sukkot, the Chazon Ish handed Rabbi Lefkowitz a packet of seeds taken from the etrog he had used for the festival and instructed him to plant them in his yard.Rabbi Lefkowitz, who had no agricultural experience, followed his mentor's instructions to plant and water it, and the tree grew and bore fruit.Every year the Chazon Ish came to select his etrog for the holiday from the tree, as did his brother-in-law, the Steipler Gaon, and other Gedolei Yisrael.