Oh what powers does it hold, (I would take out the Oh)
In it's petals soft and bold, (I'd remove the it's)
The rose, it's beauty, unconfined, (I'd remove it's)
Branching out to bloom in mind. (I'd remove to)
Subtle heartbeats, blushing cheeks,
Pounding rhythms, nothing speaks,
Just the softness of the flower,
Mortal life, undying power.
(now this stanza is awesome. you have a lot of meaningful words as opposed to fillers)
Love and friendship, grief and pain, (try not to use and so much)
Everything in our domain,
Summed up with a single seed,
That blooms to fill our silent need.
Graceful beauty, thorns of wrath,
Everything upon love's path,
Found inside a single bloom,
The sweetest smell of life's perfume. (Sweetest smell, life's perfume, sounds better as you would remove the unnecessary filler words.)
Other than the few minor things I have mentioned, the poem is beautifully penned. It flows well and is without forced rhyming. Nice job!