Quote (NatureNames @ Oct 9 2017 05:18am)
If you're using natural light and they are budding just let them do their thing, but harvest them this year when the buds are mature. If you leave them too long you lose THC and CBD goes up. If you want peak THC then harvest when the trichomes are cloudy. If the trichomes are turning amber then THC levels are dropping. Cannabis plants do not normally over-winter. They grow one life cycle and die in the winter. It would be detrimental to leave them all winter, the buds would lose all their potency and become stale and dusty.
If you want bigger plants then start growing them earlier in the year and give them better growing conditions (primarily light). The plants you have are not going to get any bigger except for a few inches as they grow buds.
If you're using natural light make sure that at nighttime no light leaks into that room and don't turn on the lights. It is the uninterrupted darkness which causes the hormone changes in the plant to properly grow buds.