Perennial, US zones 5-9 
about 15 seeds per pack
 
Madder, Rubia tinctorum, is a perennial in the bedstraw family, and has been cultivated for it’s dye-rich roots for millennia throughout Europe, Central Asia, and India. A strong source of true red, some of the oldest known samples of red cloth were dyed with madder. Reds, oranges, pinks, and purples can be achieved with madder.
 
You'll have to be patient for this dye plant; it's recommended to wait at least 2 years for the roots to develop before harvesting, drying, and dyeing. The results are worth the wait! My homegrown madder root is superior in quality to any that I've purchased. 
 
Start seeds indoors and transplant after danger of frost has passed, planting at 1' spacing. One it starts producing it's own seeds in the second year, madder will self-seed.