How long will it be the flowering time of my landrace sativas?

Hello, so I sowed 3 Mexican sativa seeds, the ones you get on the weed you buy in Mexico, and after 2 months they started flowering (about 2 weeks ago). They have a few hairs, and today they finally started smelling. How long do you think the flowering is going to last? Just want to know if it's worth keeping them. They're growing in my balcony overlooking a beautiful Mexican beach in the pacific.

A lot of sativa can take 11 or more weeks...I am growing a Panama Red which might be similar to yours and it averages about 11 weeks after first sign flower. Hope it helps

A rough rule of thumb, "the thinner the fan leaves the longer the flower".
But you can only rely on tricombe color to tell when it's really time to harvest.

If you have to ask then longer than you want to wait.

Good luck with your grow. Patience will be needed but the reward should be good. Hopefully.