Anthurium andraeanum x 'Black Love' How to Grow Edible Onion Leaves (Green Onions) at Home, 1 Choose an Onion Use store bought onions or green onion scraps with roots attached., 2 Water Method Place the onion base in a glass of Paper Mache Plants Clay Pots & Polka Dots Dieffenbachia Houseplants at City Floral Garden Center Build Your Own Trellis Olive & June Home: Bold, Functional Interior Design Harness Plant Hanger Black Leather GOLD or Silver Hardware SMALL GOLD