Blue, yellow and red were three of the main colours of the Iron Age. The root of the madder plant produced a red colour, woad offered blue and yellow was derived from weld. Plants were soaked in ...

We have been informed that there grows wild, in Florida, a plant, whose roots, when eaten by hogs, colors their bones red. Such is the effect of madder. Doubtless this is an indigenous species ...

They might, however, plant beds every year, and after the first three years have annual crops. Madder is raised in narrow beds, about four feet wide, for the convenience of keeping it free of ...

The botanical intruder that is field madder, scientifically dubbed as Sherardia arvensis ... Physical barriers like plastic tarps and cardboard will suffice to protect desirable plants. The potential ...