How to identify the difference between Philodendron Royal Queen and Black Cardinal 

There are many cases we had heard about complains from buyers who got scammed by some opportunistic sellers.
What they have actually purchased is the wrong plant not the real one.
So in this video,this one will tackle how to tell the real one.
What is the clues to get the exact Black Cardinal away from Royal Queen?
All music is from / ikson

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