Spring means the Victorian Box Tree (Pittosporum undulatum) is in full bloom in my back yard, filling the air with its delicious floral scent. When the sticky fruits start falling on the patio, I'll know it's fall.
Used to be the poppies opening, but now they do that in Winter (late Jan., early Feb.). It's a puzzlement: does Spring spring in early Feb., or must I look for a new marker for Spring? Ask me next year, I'll have decided by then...