How to Clean Your Plants #Tuesday Tidbits by Lisa Steinkopf | May 7, 2019 | #TuesdayTidbits, BLOG, Foliage Houseplants, Houseplant CareI recently purchased an elk horn fern (Polypodium polycarpon ‘Grandiceps’). It is a gorgeous plant but is covered with hard water spots. How can I clean the water spots off? Until I wrote my first book, I didn’t know exactly how to get them off....