While Calibrachoa million bells may be a fairly new species, this dazzling little plant is a must-have in the garden. on Sep 23, 2017. Petunia Plant Herbaceous Perennials Hanging Plants Plants Seeds Petunia Diseases Flowers Annual Flowers Germination. Usually, the petunias thrive. Petunias are not prone to disease or insect infestation in the same way as other annual flowers and vegetables. Aphids. Something has been eating the blooms on my petunias. Reply. Blast them off your plants with a hard stream of water or spray … The petunias in my hanging baskets have tiny white spots on them. Ensure the spray of water hits both the bugs and the affected area, then rinse the plant with water. I have a small "porch garden" of mostly petunias on my condo balcony. No matter what I do, they end up with little black and white bugs and eventually die. 2. 1 decade ago. They could be mealy bugs or aphids. How to Kill Aphids on Petunias with the Garden Hose. If possible, spray the petunias early in the day so the moisture on the leaves evaporates quickly, minimizing the potential for fungal disease problems. Answered. Saved by eHow. Answer. Asked June 11, 2020, 7:58 PM EDT. Perhaps the easiest home remedy for aphids on petunias outside is to spray the undersides of the leaves with a strong stream from your garden hose. Petunias rarely suffer pest problems, but there are several small, white insects, such as aphids, thrips and whiteflies, that can sometimes be bothersome. Aphids are tiny insects that eat the leaves and blooms of a plant. I could not really SEE bug features, they look like tiny 'hairs', but I know it is "something alive." ETXGardener. Aphids are tiny (adults are under ¼-inch), and often nearly invisible to the naked eye. on Sep 23, 2017. could be sun burn, or insects. Some may have a waxy or woolly coating. Use natural control methods to get rid of aphids on petunias and your petunias will continue to thrive and bloom in your landscaping areas. (massive amts.) Petunias may be hardy plants, but they are vulnerable to a few destructive pests and diseases. If the white spots are not little white bugs your plants may have to much or to little fertilizer. 3 answers Dfm. Helpful. Good luck with your petunias! This has been going on for a couple of weeks now, but this is the first time I have observed the actual insect. 0 0. I'd guess you have aphids. Both very contagious, so keep from other plants . The most common plant bugs of interest to gardeners are cinch bugs, harlequin bugs, and squash bugs. Various species can appear white, black, brown, gray, yellow, light green, or even pink! Like leafhoppers, plant bugs inject a toxin into your plants’ leaves, buds, and shoots as they feed. They just got COVERED with tiny white hair like bugs on the back of the leaves, and are showing signs of weakness. Insects on Petunias. "Plant bugs" is a term that includes a number of true bugs, members of the Hemiptera order of insects. If you do have problems with aphids on petunias, treat them swiftly to avoid further problems. What to do? Its name comes from the fact that it features hundreds of small, bell-like flowers that resemble miniature petunias.Its trailing habit makes it perfect for use in hanging baskets, containers or as a small area ground cover. Firstly, check if the soil & roots are contaminated too. I discovered the insects (tiny specks on the white bloom) in the photo this evening. The blooms are covered in them. Fungi, bugs, blight and malnourisnment can all cause your plants to produce fewer or smaller blooms or even die. I have tried several varieties, including regular old petunias and the 'Wave' varieties. 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