Why does Gatsby deliver so many goods and services to Nick's house in The Great Gatsby?

In Chapter Five we see that Gatsby has used Nick's
relations with Daisy to secure his long-anticipated reunion with Daisy, but through Nick
inviting her to tea at his house. Gatsby, ever concerned to show his wealth and also
wanting to indicate to Daisy his love for her, is not satisfied by Nick's much less
extravagant way of life, and thus "beautifies" Nick's house as much as possible, sending
his own gardiner to mow Nick's lawn and then sending over a "greenhouse" of flowers,
"with innumerable receptacles to contain it." Gatsby wants to make sure that everything
is perfect and that his wealth and massive change of circumstances is evident to Daisy
when they first meet again after a separation of such a long time. Of course, it appears
that such tactics hardly seem necessary, as when Daisy does come, she hardly takes her
eyes off Gatsby, and so probably would not have noticed the flowers or the
lawn.