hi indaina
best leave it untill the the time is just right, wait untill the trichomes are around equaly amber/clear try not to leave it till it frosts, frost will harm the buds, you can easily tell the time is right with a cheap x 10 magnifying tool, leaving your bud to late will convert your thc into cbd or cbn even, still gets you stoned, but can give ya nasty headaches ...... peace happy