The only fruits we get in our city are from fruit vendors. There's no concept of picking fruits directly from trees in Karachi as it's a metropolitan and we hardly have any fruit orchards. But I had the oppurtunity of picking and eating fresh fruits quite recently when I visited the northern areas of Pakistan and it was an amazing experience.
Speaking of berries, I picked blackberries as well in the northern areas. These are know as shehtoot in our mother tongue (urdu)
I have heard there are some poisonous fruits in the forrests as well. Is it true?
There are very few poisonous berries in our climate zone. I know of only three poisonous species, but they are very rare in the forest. It's a different matter in the mountains, where there are slightly higher chances of encountering poisonous berries.