Bright red/orange beetles, larger than a ladybird are a severe pest of garden lillies. The beetles feed on the leaves of lillies almost as soon as they start coming up. the larvae of these beetles which are reddish/ brown also feed on the plants later in the summer. These grubs cover themselves in the digested leaf material as protection against birds who would eat them.
Cultural measure: Remove and destroy any beetles or grubs when they are seen.
Product solution: Spray lillies before the lily beetle are seen. Provado Ultimate Bug Killer Concentrate 2, Ready to Use, aerosol.