Pest identification
What's eating my agapanthus 'midnight blue'?
Aphids
Signs: Green or blackfly clusters on young shoots and flower stems; honeydew and sooty mould follow.
Control: Dislodge with water spray; use insecticidal soap or neem oil; encourage predatory insects.
Vine weevil (Otiorhynchus sulcatus)
Signs: Root-feeding grubs cause plant collapse; adult beetles leave notched leaf edges, most visible at night.
Control: Apply nematodes (Steinernema kraussei) to moist compost in late summer or early autumn; repot and inspect roots regularly.
Slugs and snails
Signs: Ragged holes and slime trails on emerging leaves in spring and early summer.
Control: Scatter ferric phosphate pellets; hand-pick at night; use copper barrier tape on containers.
Keep agapanthus 'midnight blue' pest-free
Healthy plants resist pests best. Get the basics right:
Agapanthus 'Midnight Blue' pests — FAQ
What is eating my agapanthus 'midnight blue'?
Agapanthus 'Midnight Blue' faces similar threats to other agapanthus cultivars. Aphids colonise flower stems and new shoots. Vine weevil grubs are particularly damaging in container plantings. Slugs target spring foliage. Overall this cultivar is a tough garden plant with few serious pest problems when grown in good conditions.
How do I get rid of aphids on agapanthus 'midnight blue'?
Green or blackfly clusters on young shoots and flower stems; honeydew and sooty mould follow. Dislodge with water spray; use insecticidal soap or neem oil; encourage predatory insects.
How do I get rid of vine weevil (otiorhynchus sulcatus) on agapanthus 'midnight blue'?
Root-feeding grubs cause plant collapse; adult beetles leave notched leaf edges, most visible at night. Apply nematodes (Steinernema kraussei) to moist compost in late summer or early autumn; repot and inspect roots regularly.
How do I get rid of slugs and snails on agapanthus 'midnight blue'?
Ragged holes and slime trails on emerging leaves in spring and early summer. Scatter ferric phosphate pellets; hand-pick at night; use copper barrier tape on containers.