Throwback! We installed this gorgeous 24-inch box citrus tree—a pink lemonade variety a few years ago! But a sooty mold, a black fungus, creeping onto the leaves. Sooty mold is often a side effect of sap-sucking insects like aphids, scale, or mealybugs. These pests leave behind a sticky residue (yes, insect poop!) that attracts dust and pollution, creating the perfect environment for fungus to grow. If your citrus is showing signs of sooty mold, act quickly! First, I hosed down the tree to remov