Large Cast Iron Flower Planter Pots Some plants could care less, but with others like spider plants youll struggle with unless you use the correct water. I personally use RO water, which stands for reverse osmosis, but you can also use 7in Tall Santorini Blue Orchid Ceramic Pot with Saucer Hoffman Organic Soil Mix for Cactus & Succulent, Professionally Formulated, 10 Quart Bag Walmart.com Easy DIY: Succulent Planter Anita Yokota