Cheese n Kush

plants are nicely growing. the only hint of problem may be the purple kush, she is growing at normal speed but those spotty leaves make me worried. smell is considerable, but not punchy. some of the plants show first signs of flowering. i am planing to do LST during the following week, in the current state i dont think the plants are ready yet - when i tried to bend one side stem, it easily lightly cracked.