I have some THC Bomb plants rapidly approaching their 18th week of growth and was wondering if that would be long enough for the them to have grown to be ready to harvest. Here's some info. I planted them late May and it is approaching October and I have not harvested yet. Most of the buds are big and rock hard and a good amount of the white hairs have turned amber in color. The buds have a decent amount of crystalization as well. They don't smell grassy either, but rather sweet and fruity. I have been using an array of the Earth Juice nutes and spring water when I can. I don't think these will have to go too far into October, but hey I could be wrong. I live in the Northeast US FYI.