Bernice Bjornson had this this to say about the species in 1946:  “Chenopodium album, known as lamb’s quarters or pigweed, is a weed common to gardens, vacant lots, etc. In its young stages it is gathered for greens and it is said to be delicious.  Many people consider it better than spinach.”  She then adds this quote:  “It is probably the most common weed that might be used as human food. When small, six to ten inches high, the plants are succulent and tender, and in that stage are very desirable as a potherb. Many of the Indian tribes of the Southwest gather and cook it as a spinach.” (Saunders 1933).

Saunders, Charles F.  1933.  Western Wild Flowers and Their Stories.  Doubleday, Doran & Co., Garden City, NY.