Holesinbasilleaves are not deadly, but prolonged munching by a variety of pests may damage your plant. Basil, a member of the mint family, tastes both sweet and savory with pleasant notes of mint. They leave jagged and irregular holes, and there are lots of them. Slugs are especially attracted to young, tender basil plants. This is more serious as the smaller plants are more vulnerable, and slugs will take them down much faster. There are a handful of invertebrates that will feed on basilleaves, rendering them full of holes. In addition, there’s a fungus that can also cause holesin the foliage. Not only are these holes ugly, but depending on what’s causing them, the basil plant can even die. Slugs eat large ragged holesin the leaves of basil and many other plants. They feed at night and hide under mulch, plant leaves and rocks during the day. Trap and drown slugs using beer. Basilleafholes can be caused by a variety of pests, including slugs, snails, Japanese beetles, earwigs, aphids, and other soft-bodied insects. Slugs are notorious leaf-eaters, leaving behind large, ragged holesin the leaves of basil and other plants. If you find holesinbasilleaves, be on the lookout for snails, aphids, whiteflies, fourlined plant bugs, Japanese beetles, slugs, and caterpillars. They’re some of the more likely culprits. If you’re not sure which pest is damaging your basil plants, you’ll need to inspect the plants. What do holesinbasilleaves mean? If there are holesin your basilleaves, it means that something is eating your plant. Here's what to do once you spot the damage. Step 1: Remove the leaves with holes first, even if they are small holes. How to Prevent and Treat HolesinBasilLeaves. The first step in preventing holes is regular inspection of your basil plants. Check both the tops and undersides of leaves for signs of pests. Its fragrant leaves add a fresh, vibrant flavor to dishes from salads to pastas. However, noticing holesin your basilleaves can be discouraging and often signals a problem that, if left untreated, can weaken or even destroy your plants. Saw holesin my basil plant leaves and thought caterpillars. Look under leaves and along stems. Look for movement, they are more active in heat. Organic sprays are available. I prefer to hand pick them off. Remove from the area or quickly take care o... So you’re an herb lover, but you’re seeing holesinbasilleaves that you can’t explain? They create ragged holesin the basil plant leaves after climbing up the plant. While basil plants like mulch to help retain the moisture they enjoy, it is also a conduit for the slugs. To retard those munching slugs, try sprinkling diatomaceous earth over the mulch. Common culprits responsible for damage include cutworms, flea beetles, grasshoppers, slugs, and snails. To identify basil-eating pests, observe the condition of the leaves; holes or ragged edges can indicate infestation. How to Grow Basil. Basil is a deliciously fragrant, quick growing herb that pairs perfectly with tomatoes, garlic and lemon. It is an annual in most areas, so it will die down in winter.