The Old White Widow cannabis strain's most famous trait has to be its copious resin production. Its leaves are petite, dark and shiny, but remain quite wide. When you rub the stems of the plant, a sweet, sour and very strong smell is released. This plant's production may seem minimal compared to some of the strains, but the resin production more than makes up for it. It has a beautiful glowing coat on its flowers, producing a strong effect with great medicinal properties.