How to get rid of sawflies on ornamental plants

Sawflies are a common pest that can wreak havoc on ornamental plants, causing significant damage to leaves and stems. These pests are often mistaken for caterpillars, but they are actually a type of flying insect that feeds on the foliage of plants. If you're dealing with a sawfly infestation on your ornamental plants, here's how to get rid of them:

Step 1: Identify the Sawflies
The first step in getting rid of sawflies is to identify them. Sawflies are usually small, about 1/4 to 1/2 inch long, and have a distinctive saw-like ovipositor (a tube-like structure used for laying eggs) on their abdomen. They can be green, black, or brown in color, depending on the species.

Step 2: Remove Infested Leaves
Once you've identified the sawflies, the next step is to remove any infested leaves. Sawflies lay their eggs on the undersides of leaves, and the larvae will feed on the foliage once they hatch. Look for leaves that have irregular holes or notches, as this is a sign of sawfly feeding. Use pruning shears to remove the affected leaves and dispose of them in the trash.

Step 3: Use Insecticidal Soap
Insecticidal soap is an effective and environmentally friendly way to control sawflies. It works by suffocating the insects, and it won't harm beneficial insects like bees or ladybugs. Mix the soap according to the instructions on the label and apply it to the affected plants, making sure to cover both the tops and undersides of the leaves. Repeat the application every 7-10 days until the sawflies are gone.

Step 4: Introduce Beneficial Insects
Another way to control sawflies is to introduce beneficial insects like parasitic wasps or lacewings. These insects will prey on the sawfly larvae and help to keep their population in check. You can purchase these insects online or at a garden center and release them into your garden.

Step 5: Maintain Good Garden Practices
Finally, maintaining good garden practices can help to prevent sawfly infestations in the first place. Keep your plants healthy by watering them regularly and fertilizing them as needed. Remove any dead or diseased plant material promptly, as this can attract pests. And consider planting companion plants that repel sawflies, such as garlic, onions, or chives.

By following these steps, you can effectively get rid of sawflies on your ornamental plants and keep them healthy and beautiful.