:slaps forehead:
Did you think it made daisy-like flowers if you let it go?
If you let your plant go for that long the THC decomposes into CBN, which causes the "couch lock" feeling.
THC makes you happy, upbeat, CBN makes a narcotic high. A good balance is a good high.
Over time dried weed converts THC to CBN because of degradation due to light, air, heat... Hope that answers it.