I use sphagnum moss to cover the drainage holes in the bottom of pots. I sometimes use nylon window screen for seed trays, where it works fine for things that don't grow permanent entangling roots into it (like Clivia do). It works great for starting Gladiolus seeds, for instance. The use of newspaper in the bottoms sounds interesting! I will have to try that on the next tray of Clivia seeds I start. The roots of Clivia seedlings rarely fill the seedling pots enough to hold the potting mix inside the pot. Mature clivias are an entirely different story. Jim Shields ************************************************* Jim Shields USDA Zone 5 Shields Gardens, Ltd. P.O. Box 92 WWW: http://www.shieldsgardens.com/ Westfield, Indiana 46074, USA Tel. ++1-317-867-3344 or toll-free 1-866-449-3344 in USA Member of INTERNATIONAL CLIVIA CO-OP