How to grow a lemon tree from seed. Find healthy lemons from your favorite grocery store or fruit stand. Slice the lemons up. Remove seeds from the lemons. Remove the protective covering from the seeds with your fingernails. Place seeds on a dampened paper towel. Fold up the paper towel and dampen on both sides. Place the combination of the lemon seeds/paper towel in a plastic bag. Label the bag with the date and of its contents. Place in dark undisturbed location(drawer or cabinet)for 10 days, then check for sprouts. 7-18-21 Share this:TwitterFacebookPrintLinkedInRedditTumblrPinterestWhatsAppEmailLike this:Like Loading... Related By Boo Hardy Great things come from hard work and perseverance. View all of Boo Hardy's posts.