MandevillaPestProblems. Mandevilla vines are tough plants, but even they are subject to a few pest insects that can cause real problems. Common Problems With Mandevilla. Mandevilla plants are fairly easy to care for as long as their growing conditions are right. Here's what to do if you spot the following issues. MandevillaPest Control. Spray the mandevilla plant with a strong stream of water from the garden hose to wash pests and honeydew off, advises Clemson Cooperative Extension. In This ArticleWhat Is Mandevilla?What to Know about MandevillaPests and Diseases Mandevilla plants are known for their pink, red, and white flowers and grow naturally in tropical climates. With proper care, mandevilla vines also can thrive as year-round houseplants. Table Of ContentsHow To Care For Mandevilla: Tips and Requirements For Growing Dipladenia and Mandevilla Vine?Mandevilla Vines Pests And Diseases Although mandevillas have relatively few pestproblems, they are still susceptible to a handful of pests, especially mealybugs and for some varieties, spider mites. Healthy Mandevilla are relatively disease and pest free. Problem: Mandevilla disease problems are usually caused by humid wet conditions and overhead watering. Caring for Mandevillas. Common MandevillaPests and Diseases.Anthracnose is a fungal disease common in many ornamental plants, but particularly problematic in Mandevillas. Home/Plant Pests/MandevillaProblem.The labeling says it’s good against mites, but figured I’d double check. Also, what does a healthy, but dormant, Mandevilla look like? Mandevilla ( Mandevilla spp.) is a genus of tropical flowering vines native to Central and South America. Hardy in U.S. Department of Agriculture plant hardiness zones 10 and 11, this... Mandevilla is practically free of pests and illnesses when grown outdoors under ideal conditions. However, indoor-overwintered plants are more vulnerable to problems such as aphids... Keep your Mandevilla happy and pest-free! By now, you should be knowledgeable about what you need to get rid of and control caterpillars from eating your Mandevilla plant. Pests: 'Mandevilla is relatively pest-resistant but can attract aphids, spider mites and whiteflies,' Tatiana says. To manage pests, you can spray with a neem oil solution, available from...