I believe there is a form of poetry designed to be as open to interpretation as possible. Perchance it's intentional, perchance not...
Take, for example, William Carlos Williams' poem XXII from the book: Spring and All(1923). The poem became later known as The Red Wheelbarrow:
So much depends
upon
a red wheel
barrow
glazed with rain water
beside the white
chickens
The idea here would be that a maximum of readers could infer as wide a range as possible of meanings. This would, in effect, hand out massive audience control over message. After all, the more people who 'get it', the more of a long term audience is built...
You could spot such verse by the sheer magnitude of critiques and summaries written in its wake.
Here's an example I wrote up this evening.
What do you think it means...?
Wandering about the field
in search of weeds.
Weeds being non-existent,
Only flowers catch her eye.
