Repot The Plant To Get Rid Of Mold. This clear sticky substance is honeydew. Propagation by division is the simplest way to create more ZZ plants—simply separate the rhizomes the next time you repot your ZZ plant and plant in a separate container. A white mold growing over the surface of houseplant potting soil is usually a harmless saprophytic fungus. Green, leafy plants bring life and interest into both indoor and outdoor spaces but sometimes develop a confusing infestation of scary white stuff. How can you save an overwatered ZZ Plant? A few months ago I bought a lemongrass plant for my cat to play / chew on (She, being a cat, ignores it completely) and recently I noticed some white powder on the stalk (as you can see here), also some white stuff on one of the leaves ()I can easily clean it off but I … Learn how to care for the ZZ Plant! Once it’s dry, prune back dying leaves and stems, and repot it in new soil into a pot with a drainage hole. Saving ZZs starts with allowing the plant to completely dry out. Alternatively, ZZ … Mealybugs are harmful pests that can cause extensive damage to your plants if they are allowed to run unchecked. ZZ — shorthand for the plant’s tongue-tangling botanical name, Zamioculcas zamiifolia — may be the solution for anyone who wishes they could grow something — anything — without much attention and hassle, and better still if it can thrive on neglect. It is very contagious and, once one part is affected, it will infect the rest of the plant if not checked. Above: A ZZ plant growing on Maui. The ZZ grows smooth, naturally shiny leaves that change from bright lime to … Over time parts of the plant will succumb to the disease and die. If the roots or rhizomes have begun to rot, you’ll need to follow additional steps. However, the cacti does not have conventional leaves, so you might see the plant turning white from all around. As the disease spreads, the entire plant material can be affected with the fluffy white fungus. ; Powdery mildew usually covers the upper part of the leaves, but may grow on the undersides as well. What Is the White Infestation on Green-Leaf Plants?. ; Powdery mildew usually starts off as circular, powdery white spots, which can appear on leaves, stems, and sometimes fruit. Initially, it produces circular powdery white spots on the foliage of plants. Even the best house plant owner will come across pests. 1. In fact, during the 2010s there were false rumors that ZZ was so toxic that the plant caused cancer, and was so dangerous that people wore gloves when handling it. Give insect ridden plants a shower with warm water. The Zamioculcas zamiifolia – or ZZ plant — is a tropical perennial native to Eastern Africa that has become popular worldwide in recent years due to its tolerance of a wide range of conditions. How to Identify Powdery Mildew Damage. Our guide looks at common pests on indoor plants, and helps to identify Aphids, Mealybug, Red Spider Mites, Scale Insects, Sciarid flies, Fungus gnats, Slugs, Snails and Springtails These bugs also leave a white residue on the plants, and can mostly be found on the underside of the leaves. It is often the first thing gardeners notice when aphids, mites, whitefly, mealybugs, or scale are feeding on their plant. Plants infected with powdery mildew look as if they have been dusted with flour. ZZ plants propagate in two main ways: through division, and through leaf cuttings. Young foliage is most susceptible to damage. All of these insects suck plant juices and secrete the excess as honeydew. You can get rid of the unsightly white mold in your plant’s soil in the following 5 ways. If you are not willing to try to remedy the mold problem yourself, you might want to eliminate the problem completely, in one fell swoop. Photograph by Forest and Kim Starr via Flickr.. 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