Which strains have earliest preflowers?

[hedgeraider]

I have had 6 feminized seeds that all preflower in 24/24 lighting after a month (cbd crew therapy). Many plants still don't show sex very clearly at 18/6 when they are 6 foot tall.

Can you recommend varieties that can produce 2 pounds and that have female flowers on every node with long days and from very early?

 

[OakyJoe]

just had some Serious Seeds - Serious Happiness which had preflowers on every plant after 3-5 weeks of 18/6....