Most growers tend to have a couple strains rolling at any time. Even with a single strain I'll bet you've named them haven't you?
I've always used popsicle sticks in the past, but come harvest time inevitably lose the stick and risk a mixup. This year I've opted for some wrap-around bands on the trunk. I'm hoping I leave these on even once I pull them until they're trimmed and weighed!
What are your tricks to track your plants?