Be careful when presenting flowers to a friend or business associate in Russia. Yellow blooms signify deceit or a relationship break-up. And skip red carnations, too. Traditionally, red carnations are placed on the graves of the dead, or are offered to surviving war veterans.

There are two reasons why you should think twice before giving your love yellow flowers. Firstly, yellow stands for unfaithfulness; secondly, a bouquet of yellow flowers will lead to fights and a break-up. So, if you are a huge fan of yellow roses, it’s better to choose white or red flowers in Russia.

Source: http://rbth.com/arts/2016/03/25/spring-is-coming-10-flower-superstitions-in-russia_579079, http://www.readersdigest.ca/travel/travel-tips/13-unusual-international-customs-you-never-knew-existed/3/