plantmadder
bot. namerubia tinctoria
partroots
extractionheat
water
alum
sulfuric acid
water
alum
sulfuric acid
col. groupanthraquinones
colorantalizarin
christofin
galiosin
hydroxyan-
thraquinone
munjistin
pseudopurpurine
ruberythric acid
rubiadin
christofin
galiosin
hydroxyan-
thraquinone
munjistin
pseudopurpurine
ruberythric acid
rubiadin
sourcenl
print
sample
sample
plant month
plant month
3
4
5
crop month
crop month
1
2
10
11
12