The strain MAMA THAI

Hi all

Anyone have information on the strain MAMA THAI
Got 10 non feminized seeds (seedman) in a head shop -it was all they had and I was in a panic to get started to make the most of the Irish summer sun!(outdoor greenhouse grow)

I checked online and there's very little information, apart from it being a pure sativa.Iâ??ve 6 females had them in 12/12 flowering since the early July. Only grown once before and it was white widow plant which I had to cut early due to the onset of bud wrot.

So Iâ??ve 2 questions:
How do I know when to harvest?
Some buds seem further along than others so would anyone recommmend harvest individually? Where do I cut?