So called "weeds" deserve a second look.
"What is a weed? A plant whose virtues have not yet been discovered." ~Ralph Waldo Emerson, Fortune of the Republic, 1878
I am a big fan of a naturally growing shady ground cover called Horse herb. I have revisited landscapes where I purposefully planted it in shady retreats and have been so pleased with the results. It is an extremely drought tolerant ground cover in the shade and can be hit back with the line trimmer if it gets taller than 6".
Rainlily is a lovely lily that pops from its below ground bulb after a Spring rain. It is a short lived gift of delicate color and fragrance.
Another excellent so called "weed" is a cool annual from the mint family called Henbit. It grows in healthy moist soils and is edible. Henbit can be controlled by picking and eating it with the rest of your winter vegetables. All parts are edible and is used as an herbal remedy, as an anti-rheumatic, diaphoretic (sweat inducer), excitant, febrifuge (fever reducer), laxative and stimulant.