![Infographic on the chemistry of dahlia flower colours. The colours of dahlias are a result of anthocyanin-, chalcone- and aurone-derived pigments. Colourless sflavones also interact with and stabilisse anthocyanin pigments. Chalcones and aurones lead to yellow and orange dahlias, while anthocyanins play a part in orange, pink, red and black dahlias. Blue dahlias aren't seen because dahlias lack an enzyme for making delphinidin, the anthocyanin which leads to blue flowers.](https://i0.wp.com/www.compoundchem.com/wp-content/uploads/2021/09/Dahlia-flower-colours.png?resize=370%2C208&ssl=1)
![Infographic on the chemistry of dahlia flower colours. The colours of dahlias are a result of anthocyanin-, chalcone- and aurone-derived pigments. Colourless sflavones also interact with and stabilisse anthocyanin pigments. Chalcones and aurones lead to yellow and orange dahlias, while anthocyanins play a part in orange, pink, red and black dahlias. Blue dahlias aren't seen because dahlias lack an enzyme for making delphinidin, the anthocyanin which leads to blue flowers.](https://i0.wp.com/www.compoundchem.com/wp-content/uploads/2021/09/Dahlia-flower-colours.png?resize=370%2C208&ssl=1)
![](https://i0.wp.com/www.compoundchem.com/wp-content/uploads/2023/11/The-chemistry-of-poppies-2023.png?resize=370%2C208&ssl=1)
![Infographic on the chemistry of poppies. The red colour of the common poppy is due to anthocyanin pigments. Other red poppies also contain anthocyanins but the yellow Iceland poppy and alpine poppy contain nudicaulin pigments. The opium poppy has been used in medicine for thousands of years, with the milky opium fluid which contains alkaloids such as morphine used as a painkiller. The common poppy contains different alkaloids, which only have very milld pain-killing properties.](https://i0.wp.com/www.compoundchem.com/wp-content/uploads/2023/11/The-chemistry-of-poppies-2023.png?resize=1170%2C827&ssl=1)
11 November is Remembrance Day. As the flowers that grew on the battlefields of WWI, poppies are used as the symbol for this day. This graphic takes a look at the chemical compounds behind their colours, as well as some of the useful medical compounds that can be obtained from different types of poppies.