The silvery plant is called lambs quarters (genus Chenopodium.) It can be eaten in salad or cooked like spinach.
The plant with the fuzzy spikes on the end is some sort of Amaranth (also know as pigweed.) Also good eaten as like spinach. The Amaranth looks to be blooming, but neither has a showy flower, so I would advise eating rather than admiring. :)