To dye pampas grass, place it in fairly strong solutions of aniline dyes, and neat until sufficiently coloured. The most suitable dyes are soluble blue, picric acid, fast yellow, eosine, magenta methyl violet, malachite green, Bismarck brown, and acid brown. If, however, only small quantities are to be dyed, use Judson's or other dyes, which may be obtained in packets.