#1 looks a lot like stinging nettle... but if you picked some and it didn't sting, it must be something else. If it is nettle, it is okay for rabbits when dried. It loses its sting and it is valuable for increasing milk production. http://wild-foods.blogspot.ca/2007/09/s ... -beer.html
Most soil contains zillions of weed seeds. Try turning over a little patch and see what comes up. Later in the year you can harvest seeds along country roads and plant them. Those very young plants are likely something like lamb's quarters. Post a picture in a week or two.