28.04.2011 § Leave a comment
Remembering “Maple Fall”
Last autumn was long. Usually Chicago has about two weeks of spring or fall before summer or winter starts. Last autumn was long enough for the maple leaves to turn brilliantly red. I planted a few maple trees in my yard years ago but failed; they turn yellow instead of red. Luckily, there are some beautiful maple trees in my neighborhood to enjoy. I used to stop and stare at the luminous orange leaves for a long time in the alley on my way home. « Read the rest of this entry »
11.04.2011 § 2 Comments
Many people think that natural dye would be environmentally friendly and that “green” products should use natural dye. Let’s consider some facts about natural dyes.
Natural dyes have poor color power, meaning that a large amount of dye is needed to produce deep shades. Natural dyes have poor color fastness to laundering and sunlight too. Even indigo dye — which has a pretty good output — is not powerful enough to supply today’s demand. « Read the rest of this entry »