Belgium does not have a national flower, foreigners commonly say the poppy and the Lilly-of-the-valley are the Belgian national flowers but that's a misconception. It's not because in Flanders Fields states Flanders poppies, but they are considered weeds, and there is a tradition to give Lilly-of-the-valley's to women in may that that makes these flowers the national flowers.
July 21st
the national tree is an elm tree
Belgium has no national flower, no national tree and it's anthem is La/De/Die Brabançonne. (the first three words all mean 'the', but since Belgium has three different languages the word is translated, other German name is 'Das Lied von Brabant') People generally say that the Lilly of the Valley and the Red Poppy are Belgium's national flowers but neither of these flowers actually is. I am not surprised that these flowers are said to be Belgian National Flowers by non-Belgian sources. If they were the Federal Government's site would make reference to them.
makar funer
The Belgiums
flowers
Yes of course we do
Switzerland does not have an official national tree.
The national tree of Greece is the olive tree.
I believe that the pine tree is the national Christmas tree.
The birch tree is considered Russia's national tree.
National tree of Persia (Iran) is Cherry tree.