Pest identification
What's eating my giant feather grass?
Aphids
Signs: Colonies cluster on young stems and flower stalks, causing distorted growth and sticky honeydew residue.
Control: Blast off with a strong jet of water; apply insecticidal soap or neem oil spray if populations persist.
Rust (Puccinia spp.)
Signs: Orange-brown powdery pustules on leaf blades and sheaths, causing premature die-back.
Control: Remove and bin affected foliage; improve airflow by thinning clumps; avoid overhead watering.
Slugs & Snails
Signs: Ragged edges and slime trails on young foliage and base of stems, mainly in damp conditions.
Control: Apply wildlife-safe iron phosphate pellets around the base; use copper tape on containers.
Keep giant feather grass pest-free
Healthy plants resist pests best. Get the basics right:
Giant Feather Grass pests — FAQ
What is eating my giant feather grass?
Giant Feather Grass (Stipa gigantea) is largely pest-resistant but aphids can cluster on stems and emerging flower spikes, and rust fungus causes orange pustules on leaves. Deer and rabbits rarely bother it. Good airflow and avoiding waterlogged soil prevents most problems.
How do I get rid of aphids on giant feather grass?
Colonies cluster on young stems and flower stalks, causing distorted growth and sticky honeydew residue. Blast off with a strong jet of water; apply insecticidal soap or neem oil spray if populations persist.
How do I get rid of rust (puccinia spp.) on giant feather grass?
Orange-brown powdery pustules on leaf blades and sheaths, causing premature die-back. Remove and bin affected foliage; improve airflow by thinning clumps; avoid overhead watering.
How do I get rid of slugs & snails on giant feather grass?
Ragged edges and slime trails on young foliage and base of stems, mainly in damp conditions. Apply wildlife-safe iron phosphate pellets around the base; use copper tape on containers.