The difference between the French words "de" and "du" can be tricky and many people mis-use the words. Literally translated, both words mean "from." But it is how they are used in a sentence where the shade of difference is found. "Du" is what is called a "partitive article," it defines something of unknown quanity, as in "I want some figs for dinner!"
Thus , since VdB means "Violet (fig) from Bordeaux, "de" is the correct construction.
Not a spelling error, a grammar error.