scutlei:

All flowers have significant meanings and symbols. Rosemary resembles the remembrance of a loved companion. Violet flowers signify loyalty and devotion to a dear friend. Honeysuckles demonstrate the bonds of love that all best friends share. The flower that has the most strongest meaning of all three, though, is Zinnia. Rosemary, Violet and Honeysuckle flowers may represent a portion of a strong friendship; yet Zinnia’s meaning mixes all of their representations into the thoughts and memories that these friends own. The Zinnia flower symbolizes the thoughts of absent friends, both joyful and sad ones. 

☆ Xion: Rosemary

☼ Axel: Violet

☾ Roxas: Honeysuckle

☆ ☼ ☾ : Zinnia