Pest identification
What's eating my hyacinth bean?
Aphids
Signs: Clusters on stems and undersides of leaves; honeydew, sooty mold, and distorted pods.
Control: Spray with insecticidal soap or neem oil; attract beneficial insects such as ladybirds and hoverflies.
Bean pod borers / caterpillars
Signs: Entry holes in pods with frass inside; larvae feed on developing seeds.
Control: Apply Bt (Bacillus thuringiensis) spray targeting young larvae; remove and destroy affected pods promptly.
Spider mites
Signs: Fine stippling on leaf surfaces, bronzing, fine webbing on undersides in hot dry conditions.
Control: Increase humidity; spray forcefully with water or use predatory mites (Phytoseiulus persimilis).
Deer and rabbits
Signs: Stripped seedlings and chewed stems at browse height, especially overnight.
Control: Install rabbit-proof fencing (at least 90 cm / 3 ft); use deer repellent sprays or motion-activated deterrents.
Keep hyacinth bean pest-free
Healthy plants resist pests best. Get the basics right:
Hyacinth bean pests — FAQ
What is eating my hyacinth bean?
Hyacinth bean (Dolichos lablab) is an edible legume vine that draws aphids, spider mites in hot dry weather, and bean beetles. Caterpillars (including armyworms) chew foliage and pods. In garden settings, deer and rabbits will browse seedlings and young foliage if not excluded by netting or fencing.
How do I get rid of aphids on hyacinth bean?
Clusters on stems and undersides of leaves; honeydew, sooty mold, and distorted pods. Spray with insecticidal soap or neem oil; attract beneficial insects such as ladybirds and hoverflies.
How do I get rid of bean pod borers / caterpillars on hyacinth bean?
Entry holes in pods with frass inside; larvae feed on developing seeds. Apply Bt (Bacillus thuringiensis) spray targeting young larvae; remove and destroy affected pods promptly.
How do I get rid of spider mites on hyacinth bean?
Fine stippling on leaf surfaces, bronzing, fine webbing on undersides in hot dry conditions. Increase humidity; spray forcefully with water or use predatory mites (Phytoseiulus persimilis).
How do I get rid of deer and rabbits on hyacinth bean?
Stripped seedlings and chewed stems at browse height, especially overnight. Install rabbit-proof fencing (at least 90 cm / 3 ft); use deer repellent sprays or motion-activated deterrents.