Seeds from pigweed and lambsquarters were present as were seeds from morningglory. The latter plant is a fairly nutritious species and the Indians ate its roots like a potato. Waking up to a Cup of Weeds. If the cost of coffee has you looking for a substitute, don't overlook a cup of steaming, freshly brewed dandelions, chicory or figs. Dry and roasted dandelion roots produce an acceptable mock coffee.
Chicory also makes a good coffee substitute.
Some people use the herb as a coffee extender after drying and roasting. Figs, oven-dried and ground, make a fine alternative for coffee boycotters. Those who have tried it defy anyone to taste the difference. With the Midas Touch. Centuries ago the sunflower was cultivated widely by both North and South American Indians.