Chewing Pests

Please accept our apologies for the delay in responding! There aren’t many chewing pests of Plumeria, that we know of, except for cutworm larva (caterpillars). So we recommend you examine the plant for those. We’ve included a link with more info. (please note that this link recommends chemical products called Diazinon and another called Dursban, but we don’t recommend these as they are known to pollute CA watersheds and have toxic affects on aquatic organisms). We recommend caterpillar control products that contain Bacilus thurengiensis or Bt – you can get this at most garden centers. Its possible this chewing pest might be snail/slugs. We’ve included a link with more info about snails/slugs, how to trap them, where to look for them in your yard/garden, what active ingredients you should look for in a bait product (and ingredients NOT to use), and etc.
https://www.mauiplumeriagardens.com/images/pcb1_2.pdf
http://www.ipm.ucdavis.edu/QT/snailsslugscard.html