As you can see on the pics, there is growing new s...

Yes you will want to remove any and all plants growing around your cannabis. Not only can they affect the root system of your cannabis plant by stealing nutrients they can also block out your roots from growing. Also the smaller plants can attract and provide a place for insects to climb up onto your cannabis plant. Make sure to remove and cleanup the area around your plant from other plants growing and dead foliage. Hope this helps, good luck on your grow.