From Hell It Came
A murdered prince comes back from the dead in the form of a mutated tree to seek his revenge. Low-budget glory and non-scary monsters for all!
Carolyn Hebert commented
TV Guide in the 1970s described it; "A monster tree trunk threatens a group of scientists."
Really? Did they ever think of just moving to another location - say, 30 feet away from the monster tree trunk? Then the tree trunk moves, just about the way you would expect a tree trunk to move, millimeters at a time. Slugs on my back porch could outrun this thing.
Howlingly funny. I've loved it for 40 years.
Hard to be too terrified of a "monster" that can be taken out by Dutch Elm disease.
Coyote Killer commented
Absolute MUST-SEE photo of the mega-lame "monster" in this one, folks: