AROIDS SOIL LESS POTTING MIX Best for Monstera, Philodendron, Aglaon Urban Gardening Mom Mammillaria spinosissima Cactus If you're seeing orange, brown, or almost rusty looking spots like this, it's not damage, it's a fungal infection called Rust Fungus It develops when moisture sits on the leaves for Mammillaria prolifera vaso 14 Cactusmania Get your mind out of the gutter! Mammillaria Perezdelarosae Var Andersoniana Crested Grafted by Kyle Frost Reptiles *Ornamental, NOT for use with animals. We just couldn't resist posting it. Brown Spots On Monstera Leaves: 5 Common Causes and Solution planterhoma