Hung is the past tense of hang.
The past tense of "hang out" is "hung out". For example, "Yesterday, we hung out at the beach."
The past tense of "hung up" is "hung up." For example, "I hung up the phone yesterday."
The past tense of "hang out" is "hung out."
The present tense of "hung" is "hang."
The past tense of "hung-up" is "hung-up" or "hung up." Both forms are correct, but "hung up" is more commonly used in American English.
The past perfect tense of "hang" is "had hung."
The past tense of hang-up is hung-up.
"Hung" is the past tense of "hang" when referring to something being suspended or attached, while "hang" is the present tense. Just remember that "hung" is used when talking about something that has already been placed in a suspended position.
"Hang" can be either present or past tense, depending on the context. "Hang" is present tense (e.g., "I hang my clothes in the closet") while "hung" is the past tense (e.g., "I hung my coat on the hook").
If 'hung it up on the tree' is in the past tense, as in 'He hung it up on the tree!', it is correct. If it is in the present tense, then, no, it is incorrect. In the present tense, the correct way of saying it would be, 'hang' or 'hangs', not 'hung'.
The present perfect tense of "hang" is "have/has hung." For example, "I have hung the picture on the wall."
The past tense of "hang" is "hung" when referring to suspending something. Example: I hung the picture on the wall. If referring to someone's death by hanging, then the past tense is "hanged." Example: The criminal was hanged for his crimes.