5* that I already have (not including event girls)
Slice:
Camellia, Oncidium, Water Lily, Gerbera, Lupine, Cherry Sage, Justicia, Suzuki Grass, Lantana, Delphinium, Hop, Aloe, Creeping Smartweed,
Hit:
Cymbidium, Violet, Peach, Cyrtanthus, Oxalis, Snapdragon, Cactace Bride, Ivy, Heather, Lady's Sorrel, Flowering Peach Bride
Pierce:
Rose, Toad Lily, Chocolate Cosmos, Iris, Anthurium, Japanese Iris, Pitahaya, Fir, Madonna, Liriope,
Magic:
Convallaria, Strawberry Candle, Queen of the Night, Evening Primrose, Epidendrum, Apple of Sodom, Sarcandra, Tree Peony, Veronica, Balloon Vine, Allium, Bakery Girl Sakura
And the only 6* that I have are:
Flowering Peach, Dogwood, Nerine, Viola, Alstroe Maria