Pest identification
What's eating my eryngium planum 'blue hobbit'?
Aphids
Signs: Green or blackfly colonies on flower stems and bracts, producing sticky honeydew and weakening developing flower heads.
Control: Jet of water or insecticidal soap spray; encourage ladybugs and parasitic wasps by providing habitat plants nearby.
Slugs and snails
Signs: Holes and slime trails on young basal leaves and new rosette growth before the foliage becomes fully spiny.
Control: Iron phosphate pellets around the crown in early spring; grit mulch deters slugs and improves drainage.
Vine weevil
Signs: Notched leaf margins from adult beetles feeding at night; C-shaped grubs in soil can eat roots, causing sudden wilting.
Control: Apply pathogenic nematodes (Steinernema kraussei) to moist soil in late summer or early autumn to target grubs.
Keep eryngium planum 'blue hobbit' pest-free
Healthy plants resist pests best. Get the basics right:
- What eats sea holly — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Common eryngium planum 'blue hobbit' problems & fixes
- Eryngium planum 'Blue Hobbit' watering schedule
- Eryngium planum 'Blue Hobbit' light requirements
- Full eryngium planum 'blue hobbit' care guide
Eryngium planum 'Blue Hobbit' pests — FAQ
What is eating my eryngium planum 'blue hobbit'?
Eryngium planum 'Blue Hobbit' is a compact sea holly with tough, spiny foliage that deters most pests and browsing animals. Aphids are the most frequent visitor, clustering on flower stems. Slugs may attack young rosettes in spring. This cultivar's dwarf habit makes it easy to monitor and treat early.
How do I get rid of aphids on eryngium planum 'blue hobbit'?
Green or blackfly colonies on flower stems and bracts, producing sticky honeydew and weakening developing flower heads. Jet of water or insecticidal soap spray; encourage ladybugs and parasitic wasps by providing habitat plants nearby.
How do I get rid of slugs and snails on eryngium planum 'blue hobbit'?
Holes and slime trails on young basal leaves and new rosette growth before the foliage becomes fully spiny. Iron phosphate pellets around the crown in early spring; grit mulch deters slugs and improves drainage.
How do I get rid of vine weevil on eryngium planum 'blue hobbit'?
Notched leaf margins from adult beetles feeding at night; C-shaped grubs in soil can eat roots, causing sudden wilting. Apply pathogenic nematodes (Steinernema kraussei) to moist soil in late summer or early autumn to target grubs.