Every harvest I cut a piece off early to test it. I always know the chances of getting high are 1-1,000,000,000,000,000 but I try anyway. The taste is usually just environmentally friendly, has a strong organic taste, but not a weed taste, more of a plant taste. It takes a few hits just to get it crispy enough to tolerate & keep a burn going. Best idea I've used is putting the nug in the oven/food dehydrator temporarily & then smoking, usually eliminates having to re-light, re-light, re-light, also lowers the THC content/weight. One thing I have always noticed though, above all else... is I usually only get light headed for about 10-20 min. & not really 'high' I guess. I've grown some killer buds to, so... in conclusion, I guess my tolerance is just to far ahead of yours, because I have never ever heard of someone getting high for 3+ hours off of undried/uncured, early cut marijuana. Sorry, if you get high off of that, your tolerance is that of a newborn, Hell... not even newborn, a fetus!
Don't tell me your tolerance isn't low either if your getting blasted for 3-hours off that. Maybe in your area you always get red-bud so this is like a 'treat' for your senses? Idk? Hell, I have a hard enough time staying high for even 1 hour after smoking bomb bomb bud, I wish I had the low tolerance to smoke shitty bud or even good bud & stay high for 3+ hours! I would kill for those teenager days back! I haven't been high for longer then an hour without more consumption within that hour, in years. Guess that's what happens when you live in a pro-pot area such as California, where the bud laws are lean, the bud is greener then green, an unlimited. =)
...More power to you, have fun with that. In short, no, I've never had the experience you do, your lucky.