Kiefer Sutherland -- 'Tis the Season ... to ATTACK MORE XMAS TREES!

Kiefer Sutherland just scared the living crap out of a perfectly innocent Christmas tree ... pretending to form tackle the fur ... in a new holiday card intended to spoof his famous tree dive of '06.

If you recall, Kiefer ferociously murdered a suspicious-looking Xmas plant in a London hotel during the filming of the documentary "I Trust You to Kill Me" ... possibly because he may have been drunk at the time.

Now, Sutherland has mocked the incident ... posting the greeting card to his Twitter page.

Pretty funny ... but nothing beats the real thing.