Aphids on Knockout Roses – Marketing Myth vs. Reality

Aphids on Knockout Roses – Marketing Myth vs. Reality

Knockouts get aphids like any rose. "Aphid-resistant" claims are marketing exaggeration.

Identification

Tiny green bugs on leaf undersides/buds; sticky honeydew on leaves.

Control

• Water blast – dislodges most.
• Pyrethrin spray (perennial-based) – effective, low toxicity.
• Spray base too – for nymphs.
• Repeat until gone – conditions may favor reinfestation.

Knockouts are tough – they'll handle it.