Sick Plant What insects would do this damage

@guitarzan Hi mate, did you have a look on the underside of the leaves, I dont know if caterpillers or something would do that kinda damage. slugs can eat a lot but there doesn't look to be any slime about. Did that happen over a few days or are you checking it daily.

Iv been very lucky so far and not had many bugs but iv seen caterpillers stripping the leaves off some berry bushes in the garden in a very short space of time.

But thats where I run out of ideas.lol some of the other lads might know tho 🙂 

Caterpillars can do that mate, specifically tobacco bud worms do this where I live. They eat the tender young leaves first. Looks like you are outdoors from the looks of the photo. I see grass in the background and outdoors this time of year is when it happens. 

@guitarzan , Like Monkeydo posted It could be caterpillars but they often leave small black poo dots next to where they eat. If you don’t see any I believe it could be grasshoppers. 

Japanese beetle will also do this kind of damage.  You are definitely looking for a bigger bug.  

@stootie I check on them every day..  it's been happening on a continuous basis..  this happens every year early in the season.. and then later in the season the plants will somewhat recover..

@philmebowls  I don't see any black poo.. I have checked under the leaves .. top of the leaves..  stems .. the whole plant pretty through..  I find a few white flies..  an occasional leaf roller..  I also seen 1 stink bug 1 time.. I sprayed neem oil once and that did seem to get rid of most of the white flies..  I have gone out at night with a flash light..  so..idk..?   What ever it is it sure likes cannabis 

@philmebowls that could very well be true..  although I don't see grass hoppers very often in the yard..this same damage happens every year and will kill a few plants.. but most recover later in the season..  obviously it would be better if I could prevent it all alone.. but I must first know what I'm dealing with... I think I'm going to get some bt spray and try that..  any thoughts on By..?

@guitarzan try alternating BT (Bacillus thuringiensis) one day, oils another day.  I use neem, peppermint, tea tree and eucalyptus in water with a touch of dish soap to spray for my oil concoction. I have had great luck with this alternating method.  Good luck with the bugger

@guitarzan , Place some sticky traps all around your plant and the next morning you’ll see who or what the Leaf eater is.

@philmebowls that's a good idea..  I'll get some and see what I catch..  I think it's some kind of cattapillers.. IDK if a cattapillers would crawl on to the sticky cards.??   But will see...thanks