My plants are into 4th week of bloom and are in 1.5 gallon containers and am wondering can I transplant into a bigger container at this time or will it cause stress. Thinking they might be gettin root bound.
Yes, gently, and remember they will be dormant for about a week after transplant. Then you'll have to keep aclose eye on them for the rest of grow due to they might go hermie, even one node might grow balls!>)
If you do get hemie remove them or pick the flower off asap even if it mean destroying buds. A light misting first would help stop any pollen escaping when picking and always wash hands once ya touch a male flower before moving onto the next one. Last time I had one I picked em off n cropped early. Lol she got big balls dirty big balls but we're got the biggest balls of them all.