Alien Invader In Your Yard

The Abnormal, Gruesome Gall

They appear as if from nowhere. A previously healthy looking plant suddenly has an abnormal growth protruding from it. Some are hideous and some strangely beautiful but they leave the plant looking as if it has been invaded by miniature aliens.
And in a way that's exactly what has happened. Take a look at the weirdness of the plant gall.