With its thorns it represents protection and also nobility of character and birth.
We used waves to represent its leaves as a reference to fertility and birth, shark teeth for the corolla represent strength and the spear heads of the stalk are a symbol of strength and protection.
Requested by Nathan.
A curiosity: it is told that one night the English army was approaching the Scottish camp barefooted not to be heard, and they ended up in a field of thistles, thus alarming the Scottish who defeated their opponents, and on this account thistle flowers have become the emblem of Scotland.