<P> Anthocyanins are found in the cell vacuole, mostly in flowers and fruits, but also in leaves, stems, and roots . In these parts, they are found predominantly in outer cell layers such as the epidermis and peripheral mesophyll cells . </P> <P> Most frequently occurring in nature are the glycosides of cyanidin, delphinidin, malvidin, pelargonidin, peonidin, and petunidin . Roughly 2% of all hydrocarbons fixed in photosynthesis are converted into flavonoids and their derivatives, such as the anthocyanins . Not all land plants contain anthocyanin; in the Caryophyllales (including cactus, beets, and amaranth), they are replaced by betalains . Anthocyanins and betalains have never been found in the same plant . </P> <P> Sometimes bred purposely for high anthocyanin quantities, ornamental plants such as sweet peppers may have unusual culinary and aesthetic appeal . </P> <P> Anthocyanins occur in the flowers of many plants, such as the famous blue poppies of some Meconopsis species and cultivars . </P>

When are anthocyanins produced do all trees produce this pigment