What's eating my campanula poscharskyana?

Campanula poscharskyana (Serbian bellflower) is most damaged by slugs and snails that shred the spreading mats of foliage and flowers. Aphids colonize soft stem tips, and vine weevil grubs threaten the root system. Its vigorous spreading habit means minor pest damage is often outgrown, but slug pressure in wet springs can devastate new growth.

Ragged holes in leaves and petals across the mat; complete defoliation of trailing stems in severe infestations Ferric phosphate pellets; coarse grit mulch; nematode biological control (Phasmarhabditis hermaphrodita) applied to moist soil

Dense colonies on young shoot tips and flower stalks; honeydew, sooty mould, distorted growth Water jet or insecticidal soap spray; neem oil; encourage hoverflies and parasitic wasps

Patches of the mat wilt and die as grubs eat roots; especially risky in container plantings Pathogenic nematode drench in late summer; hand-remove grubs when dividing or transplanting