I'll tell a funny story about my failed attempt last year just to show you how my thumb is nowhere near "green"....BTW, it wasn't funny when it was happening but now I get a kick out of it...
So last year I tried growing only three veggies in containers...I had cherry tomatoes, the green onions, and bell peppers...All the plants started out well and looked promising...One day I noticed that a few of the leaves were missing from the tomato plant...I didn't think much about it, figured some insect had munched on them....A couple days later even more leaves were missing and even some from the bell pepper plant were gone...So I sprayed the leaves with my mixture of dish-washing liquid and water as suggested for pests on several gardening web sites...So about a week or so later I noticed that almost ALL the leaves on the tomato plant AND the bell pepper were gone!....This had been slowly happening for about two weeks...I started to think maybe they ended up getting a disease or something....Then, as I was closely inspecting them I saw this HUGE green worm laying along the main stalk of my bell pepper, pretty much camouflaged...I'm not sure exactly the species and I wish I would have taken a picture, but it looked similar to this one:
Anyhow, needless to say I had finally found the culprit...But it was too late...I could kick myself for not thoroughly inspecting the plants sooner....It wasn't long before both plants ended up dying with no leaves...
The story is funny to me now because this one large worm did all that damage and I was none the wiser at the time....