In Great Britain and/or Ireland:
Foodplant / pathogen
Armillaria mellea s.l. infects and damages Ceanothus

Foodplant / sap sucker
Chionaspis salicis sucks sap of live stem of Ceanothus

Foodplant / parasite
Cylindrocladium pauciramosum parasitises Ceanothus

Foodplant / saprobe
densely encrusting Lepidosaphes ulmi is saprobic on live branch of Ceanothus

Foodplant / open feeder
caterpillar of Orgyia antiqua grazes on live leaf of Ceanothus
Remarks: season: -7/8

Foodplant / sap sucker
Parthenolecanium corni sucks sap of live shoot of Ceanothus

Foodplant / pathogen
Phloeosporella ceanothi infects and damages Ceanothus

Foodplant / feeds on
pycnidium of Phoma coelomycetous anamorph of Phoma leveillei feeds on Ceanothus

Foodplant / sap sucker
Pseudococcus sucks sap of live green part of Ceanothus