He uses rosebuds as a metaphor for youth and beauty, and unlike the other two poets, does not seem to be talking to one particular lady love, but seems to be directing the advice of 'seize the day' to all in possession of the short-lived splendors of youth and beauty. The stress is less on seduction, and more on the need to celebrate youth and make the most of it, while there is still time.
On the other hand, both Andrew Marvell, in To His Coy Mistress, and Richard Wilbur, in A Late Aubade are clearly using their talents to persuade their lady loves to succumb to their baser desires. Marvell's poem starts off by leisurely, languidly enumerating all the romantic things he would do, "Had we but world enough, and time". Then he picks up speed and urgency, as he goes on to say that there is no time to waste since "Time's winged chariot (is) hurrying near". Reason enough not to dally, but to get on with life and love. As he puts it, "Now let us sport us while we may," before "your quaint honor turn to dust,/ And into ashes all my lust." The incredible beauty of his poem barely conceals his agenda, which is very clear and focused - seduction.
Richard Wilbur, a contemporary poet, has a completely different approach. Having already spent time with his lady love, he is partially satiated, and seeks to seduce her into staying longer.