The weather will determine... the first frost is probably mid October. Most strains can't take frost, so whether they're ripe or not, that will be your cue to harvest.Exactly!!!! get your magnifying glass and wait for the amber tich's......that is the only way to know when to harvest....there is no days or month specific for harvest....it's like anything grown....you harvest when ripest
some good binoculars backwards works perfectly to see the color of the trichomes.Too hard to say an exact date when they will be ready. There are so many determining factors. As others have said let the plant tell you when she is ready.