Who do u think is the cutest flower?
Or u can pick one for each rarity

Dianthus

TBH I'm really liking the current event girl, she is certainly up there with the top cuties in my book, the last event girl is also on that list along with Hannamomo and Iberis and a few others.

If I had to pick from each rarity... (Nutaku ver)

Mint
Alstroemaria
St. Paulia
Lunaria (sorry, Anthurium)
Iberis

Strawberry

Asagao/Ipomoea

Waremokou/Di Yu

(Too many golds to pick from...)

Apple, Snapdragon, Heliotrope

Lavender, Tachibana, Dipladenia, Mirabilis, Cineraria, Fuchsia, Ficaria

Daisy, Hanamomo/Flowering Peach, Helenium, Iberis

Cutest or most attractive overall? I'm going to assume attractive/hot.
6*: Cattleya. From the very start, but she eludes me still.
5*: Current rivals for my top waifu of any rarity level are Leucocoryne and Alyssum. Honorable mention (and third account's Secretary slot) goes to Poppy's evolved 'dat ass' form.
4*: The lovely Cepha. My starter 4*, and still tops for her rarity. Violetta Tulip in second, Lilac in third.
3*: Priscilla Gladiolus, then Rose Diana. Early game days saw interest in Serrata Rosalba and Gomphrena Globosa, but their H-scenes soured me on them...I can't stand teases.
2*: Amaryllis, then Helia Sunflower, then Bistorta.

Take a guess.

Poppy is the cutest. To reinforce that, she decided to show off:

->Open Spoiler<-

If I was an Orthodox Mormon, Alpinia and Victoria would also be my waifus. And Lycoris. Just about any and all of Moneti's girls really.