The phrase "out of one tree" can be interpreted to mean limited or restricted in thinking, ideas or options. To find antonyms that are in contrast to this phrase, one can look for words or phrases that suggest freedom, flexibility or abundance. Some antonyms that come to mind are uninhibited, diverse, unlimited, broad-minded, open-minded, multi-faceted, and multifarious. Another antonym could be the phrase "thinking outside the box" which implies an ability to come up with creative and innovative ideas. In summary, the antonyms for "out of one tree" are those that suggest a wide range of options and thinking that goes beyond the limited scope of a single tree.