How do you get past the Fortree Gym in Pokemon Emerald?

Answer 1

to get past the fortree gym leader winona, first you should have a pkmn with a strong water type move around lvl 45-50, this is strictly for skarmory, then you should have another pkmn with a strong ice or dragon move around the same level as the first, that's for winonas pkmn altaria, third and lastly you should have a guy with a strong rock or electric type move for the rest of her guys.

i suggest that you don't have any grass or bug type Pokemon..hope this helps:)