What's eating my cedar of lebanon?

Cedar of Lebanon is primarily threatened by bark beetles when under drought or transplant stress, and by cedar aphids that produce heavy honeydew and sooty mold. Tortrix caterpillars web shoot tips. Deer browse young specimens. This long-lived tree is broadly resilient once established, but needs adequate irrigation and space to resist pest pressure.

Boring holes with pitch or resin tubes on bark; larval galleries disrupt vascular tissue; branch flagging and dieback; whole-tree death possible on severely stressed specimens Prioritize irrigation during drought periods; improve soil aeration and drainage; promptly remove dead wood; preventive pyrethroid bark applications for high-value specimens under stress

Dense colonies on young shoots and needles; excessive honeydew causes sticky surfaces and heavy black sooty mold growth; yellowing foliage; shoot tip wilting Apply neem oil or insecticidal soap to active colonies; introduce or encourage ladybirds, lacewings, and parasitic wasps; water jet dislodges light infestations; avoid excessive nitrogen fertilizing

Shoot tips webbed together with silk; larvae feed inside webbed bundles; dead clusters of needles visible at branch tips; disfigures young ornamental trees Spray Bt (Bacillus thuringiensis kurstaki) or spinosad in spring targeting young larvae; physically remove webbed clusters on small trees; monitor with pheromone traps