This is not cannabis. growth habit and leaves along with color is wrong.

in fact i think its sumac or somthing

This is definitely Cannabis.
It is a male plant, maybe that is what confuses you?
https://www.alchimiaweb.com/bl...

Certainly not a Sumac (shrubs and trees) I am familiar with, but clearly a herb.

I cultivate this plant for a living. i have for a very long time in general and the plant in the photo has single leaves no leaflets in a majority of the foliage the colors of the stem are dramatically taken over by a color i have never seen in a cannabis plant no matter how cold or the nutrient deficiency or genetic characteristic that has passed on.

I felt the plants were under stress, they love the sun but not in the tropical baking sun for nearly the whole day, it got really way too hot where they were placed on a balcony.

Also, the people who grew them for own consumption didn't have expertise, the soil in which the plants grew was very poor and thus the plants likewise and probably the seeds they obtained too. I don't use cannabis but I definitely smelled the unmistakable typical cannabis smell, when they smoked it.

I did some research and poor quality plants can have single, (also three-leaved palmate) leaves among the others..
https://www.thcfarmer.com/comm...

The colour of a plant's stem largely depends on the variety and the growing conditions, like with any other plant.

Here are some more photos of the same plants in the same container, from another angle:


The all-tell determination point are the flowers which are definitely male cannabis flowers, you can google them..
The plants were buzzing all the time with pollen-collecting bees.
Hope you're convinced now?