Scroll down and read about the GF in this thread. This is 100% authentic information from those involved in making and preserving it. Canadians have an awesome gene pool like the rest of us. If you have never experienced Sweet Tooth you need to track down some GF x BB when he drops again in the next year or so. It's a classic and deserving like NL, Skunk, Afghani, Cookies, OG, Chem, and SD. Some are straight grapefruit on steroids and some are Blueberry with a grapefruit background (my favorite). They yield awesome to boot. Super wet trichomes and big buds so make sure humidity is on point.
https://www.icmag.com/ic/showthread.php?t=32187
This is why Wookie 15 excites me so much.