23 Colorful Houseplants to Warm Up Your Winter Gardener's Path How to Propagate a Philodendron , 1. Cutting , Clean your clippers with rubbing alcohol to keep things sterile, then cut just below a node (that little bump where leaves grow)., 2. Water, Pruning Lavender Plant Addicts Before you bring home those new blooms, make sure they're pup approved! Many common house plants can be toxic if your dog decides to do a little "taste test." Save this guide for