Then Aragorn laid his hand gently to the sapling, and lo! it seemed to hold only lightly to the earth, and it was removed without hurt; and Aragorn bore it back to the Citadel. Then the withered tree was uprooted, but with reverence; and they did not burn it, but laid it to rest in the silence of Rath Dínen. And Aragorn planted the new tree in the court by the fountain, and swiftly and gladly it began to grow; and when the month of June entered in it was laden with blossom.
'The sign has been given,' said Aragorn, 'and the day is not far off.' And he set watchmen upon the walls.
The Return of the King, "The Steward and the King"

Lord of the Rings Image Library
http://www.framecaplib.com/lotrlib.htmThanks to Lisa's screen cap library!
Although I miss Gandalf and Aragorn finding the sapling as in the book, the movie image of the dead white tree blooming is very powerful.
I've often pictured Aragorn and Arwen's wedding, and my favorite versions are set under the white tree.
Tolkien's plot for the wedding always gives me fits, however. Elladan and Elrohir ride to Rivendell to give word the day after Aragorn is crowned. Aragorn has 7 weeks, as it turns out, to plan his wedding before Arwen arrives. Arwen arrives on Midsummer's Eve, and they're married the next day. What about the official guests to witness this politically important event? How to make arrangements without giving away the secret?
I imagine that, although Arwen has undoubtedly dreamed about her wedding as she sewed her trousseau, they may never have talked about the details because the situation was so dire, their chances of being able to marry so low, and (my feeling) that it would be tempting fate to even talk about it, much less plan it together as the days darken. So poor knight errant Aragorn, who's had only temporary soldier's quarters since he became an adult and no experience in running a household, has to plan a big secret wedding without any input from his beloved.
I figure that Aragorn must have told Faramir, Imrahil, and probably Gondor's Council (having learned from his mistake of initially concealing his identity from Boromir) and asked for their help. Apparently he did not tell the Fellowship beforehand, although certainly Gandalf would have known and others may have guessed.
I figure that Aragorn plans a Midsummer/Victory celebration in Minas Tirith as cover for the upcoming wedding, hoping that the elves can arrive by this auspicious date. The celebration would give an excuse for getting everyone together and dressed up for the king's (surprise!) wedding.
I like the idea that, at last, Aragorn has a home to offer Arwen, and this time he's the one who has to wait until she arrives. Nice reversal of their usual roles!
Gotta find that Billy Idol tape . . .