Pest identification
What's eating my ribbon grass?
Aphids
Signs: Distorted, sticky new shoots; yellowing leaf tips; small green or black insects clustered on stems
Control: Knock off with a water jet; apply neem oil or insecticidal soap for persistent infestations
Slugs & Snails
Signs: Ragged, chewed holes on young leaf blades at the base of the plant after rain
Control: Remove by hand at night; apply iron phosphate pellets; improve drainage to reduce slug habitat
Leaf-mining flies (Agromyzidae)
Signs: Pale, winding tunnels or blotch mines visible through the leaf surface
Control: Remove and destroy affected leaves; encourage parasitic wasps by planting nectar flowers nearby
Keep ribbon grass pest-free
Healthy plants resist pests best. Get the basics right:
Ribbon Grass pests — FAQ
What is eating my ribbon grass?
Ribbon Grass faces few serious pest threats but aphids, slugs, and leaf-mining flies occasionally cause problems. Deer and rabbits may browse new growth. Its biggest cultural pest is itself — it spreads aggressively — but for actual insect damage, aphids on young shoots are the most likely nuisance to manage.
How do I get rid of aphids on ribbon grass?
Distorted, sticky new shoots; yellowing leaf tips; small green or black insects clustered on stems Knock off with a water jet; apply neem oil or insecticidal soap for persistent infestations
How do I get rid of slugs & snails on ribbon grass?
Ragged, chewed holes on young leaf blades at the base of the plant after rain Remove by hand at night; apply iron phosphate pellets; improve drainage to reduce slug habitat
How do I get rid of leaf-mining flies (agromyzidae) on ribbon grass?
Pale, winding tunnels or blotch mines visible through the leaf surface Remove and destroy affected leaves; encourage parasitic wasps by planting nectar flowers nearby