PansyPestProblems – Controlling Bugs That Eat Pansies. Liz Baessler's avatar.Managing Pansies and Pests. Of all the pansy plant pests, aphids are probably the most prevalent. Pansies are not usually prone to pests, but occasionally issues can arise. Learn how to identify and manage nine common pests now on Gardener's Path. Other PansyPestProblems.Other PansyPestProblems#. Snails and slugs can cause serious damage to pansies during the night, especially during damp weather. These pests chew holes in foliage and flowers, or eat through the stem and cut the pansy off near the soil. Insecticides formulated for the specific caterpillar pest provide an effective treatment. Aphids pot on pansy. Preventing pansypests. Aphids, fungus gnats, thrips and whiteflies are the most common insects that can affect pansies during production. Tips And Tricks To keep Your Pansies Pest Free. Learn how to identify and get rid of pests on pansies with our comprehensive guide. Identifying and Managing PansyPests.Watering practices are important for pansy health; both overwatering and underwatering cause problems. Slugs & Snails: These pests feed on pansy leaves and blooms at night. In a single night, their feeding can result in large, irregular holes in leaves and flowers. These plants also work great for edging, and in small spaces where visual interest is needed. PansyPestProblems? Just because they’re hardy doesn’t mean they’re completely pest-proof. Other PansyPests. Slugs and snails come out at night to chew holes in pansy leaves and flowers. They leave a slimy, glistening coating of mucus behind. Use a rake or hands protected by... Pansy flowers natural pattern. Common PansyPests and Disease. Pansies are relatively resistant to garden pests and diseases, but keep an eye out for some of these garden troubles. Slugs. These pests are small, but they can do a lot of damage if left unchecked. If you think that pests may be the problem, you should inspect your pansies closely for any signs of insects. Pests and diseases can also lead to pansy wilting. Stay vigilant and take appropriate measures to protect your plants. If your pansies have already wilted, don’t worry! PansyPests & Diseases. The most common insects affecting pansies are leafhoppers, aphids, slugs, and violet sawfly.