Pest identification
What's eating my strictus porcupine grass?
Miscanthus mealybug (Miscanthiococcus miscanthi)
Signs: Compacted distorted shoots, abnormal reddening of sheaths and stem tissue, deformed plumes; insects are hidden deep inside the crown
Control: Remove and dispose of affected stems immediately; systemic insecticide in early spring is the most effective chemical option; replace heavily infested plants
Aphids
Signs: Sap-sucking colonies on new spring foliage; sticky honeydew and light leaf distortion
Control: Knock off with water; treat with insecticidal soap or neem oil; conserve natural predators such as ladybugs
Leaf rust (fungal)
Signs: Orange to brown raised pustules on both sides of leaves, especially in wet or poorly ventilated conditions
Control: Cut and remove affected blades; water at the base; apply a suitable fungicide if infection is widespread
Keep strictus porcupine grass pest-free
Healthy plants resist pests best. Get the basics right:
Strictus Porcupine Grass pests — FAQ
What is eating my strictus porcupine grass?
Miscanthus sinensis 'Strictus' is a tough, low-maintenance grass with minimal pest pressure. Miscanthus mealybug poses the greatest risk, hiding in sheaths and causing distorted, stunted growth. Aphids and rust are occasional problems in less-than-ideal growing conditions.
How do I get rid of miscanthus mealybug (miscanthiococcus miscanthi) on strictus porcupine grass?
Compacted distorted shoots, abnormal reddening of sheaths and stem tissue, deformed plumes; insects are hidden deep inside the crown Remove and dispose of affected stems immediately; systemic insecticide in early spring is the most effective chemical option; replace heavily infested plants
How do I get rid of aphids on strictus porcupine grass?
Sap-sucking colonies on new spring foliage; sticky honeydew and light leaf distortion Knock off with water; treat with insecticidal soap or neem oil; conserve natural predators such as ladybugs
How do I get rid of leaf rust (fungal) on strictus porcupine grass?
Orange to brown raised pustules on both sides of leaves, especially in wet or poorly ventilated conditions Cut and remove affected blades; water at the base; apply a suitable fungicide if infection is widespread