hey man..you got a moth amd/or leafhopper up in that joint...either can decimate leaves...don't leave your windows open without screens etc, and try some neem oil..that stuff rocks..not sure if Monterey helps with moths or not..good luck!
neem oil Mex...einstein's oil is good pure neem..just follow directions..spray the leaves well. Chat it up with outdoor veggie growers for lots of natural methods, cedar chips, diamataceous earth..etc..etc