Why does cilantro turn red?
May 22, 2008 4:07PM
"Cilantro, or the immature plant of coriander is a short lived plant and should really be resown every two weeks, because the old plants will bolt to seed and die. This happens much faster at temperatures above 15 degrees Celsius or 60 degrees Fahrenheit. When the plant is growing in full sun the leaves will turn reddish as they mature, but this leaves them perfectly edible. When you harvest a leaf, cut it off at its point of attachment to the main stem. Once the leaf turns dry and brown, it will not have any appreciable flavour and should not be used for cooking. "