With the new event:

Missing H-Scenes:

6*:
Loquat
Helenium (Easter)
Cacao
Lotus
Freesia
Curcuma
Lantana (Festival)
Horse Chestnut
Blushing Bride
Apple (Tanabata)
Susuki Grass (Swimsuit)
Wolf Berry
Golden Lace
Daisy (Halloween)
Liverwort *New*

5*:
Aconite
Bergenia (Gothic Maid)
Devil's Claw
Xanthium
Paederia
Calceolaria
King Protea
Madagascar Periwinkle
Firethorn
Creeping Jenny [Done by spdaimon]
Lucky Bamboo
Toad Lily (Swimsuit)
Heliotrope (Yukata)
Coral Flower
Echeveria
Pitahaya (Halloween)
Cowslip *New* [Done by spdaimon]
Dicentra Peregrina *New* [Done by spdaimon]
Lobelia *New* [Done by spdaimon]

Missing 2nd Affection Scenes:

6*:
Viola (Yukata)
Loquat
Victoria

5*:
Suzuki Grass
Fireweed
Japanese Parsley
Kalenchoe
Barrenwort
Wax Tree

Missing CSQ:
Di Yu
Mountain Lily
Mirabilis
Gardenia
Cactace (Bride) *New*
Gerbera
Epidendrum
Iris
Black Baccara
Mimosa
Cattleya
Alpinia
Pumpkin
Mei Plumblossom
Victoria