Why is episode 2 of "We Rent Tsukumogami" called "Gardenia"?


Episode 2 of "We Rent Tsukumogami" ( _Tsukumogami Kashimasu_ ) is called
_Kuchinasi_ (梔子, or "Gardenia"). It centres around the culture of hanging
scrolls and their use at ceremonies (e.g. flower viewing or tea ceremonies) as
a conversation piece, noting some of the popular imagery and characters.

While the symbolism of a few different elements of the scrolls is discussed, I
don't remember them actually referring to gardenias, and even if they did it's
not a major plot point. Instead, the more important discussion is about the
relative value of a scroll with the moon on it, and its relevance to the story
of Princess Kaguya.

The only connection I can find between Kaguya and gardenias is a long shot -
in the Japanese language of flowers (花言葉), the gardenia represents "secret
love", and the resolution of the episode does involve the characters realising
that

> she longs to be able to see the moon but I feel like that's a long shot,
> especially since it's never explicitly stated in the episode.

Is that the meaning of the title, or is there something I missed?

