And twenty Oaks could not possess
The beauty of a Petal.
I like how you capitalize the names of the plants and trees, though I'm not sure that "trees" in the first stanza really applies to this rule. But, then again, neither does "petal" and I'm not complaining about it.
You’re motionless in fog—
Not sure why you need a dash here. You've used it in the previous two lines and with this line you end that collection of thoughts. Why do you need a dash? You don't need to bridge the stanzas and that would be fine with a period at the end.
It's so short that you have almost no room for error! Well, it's a beautiful poem and so I'm going to give you a gold star. Great work!
