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It's kinda hard to find a strain without any THC.. Oils made in labs are different thing, but if you wanna smoke your own strains, then find the right ratio of CBD & THC to yourself, together they make beautiful mixture ^^

I'd read about a strain with 90% cbd a while back but can't seem to find anything on it anymore

I've never heard of strain like that.. There are few strains that have very very low THC% and high CBD but nowhere near 90% ^^

perhaps 90% of all cannabinoids present were cbd. Such strains certainly exist. 19.7% CBD and 1.04% THC, 22.5% CBD and 2.71% , the the one I remember had virtually no thc in comparison to cbd. like .04% or so. I cannot find any reference to it anymore.

Yes that is exactly what I was thinking too. The lowest THC% I have seen was like 0,2% or so. I can try to find the name of the strain, if you like? :)

Nah that's ok :)