I found my Trillium erectum plants (red trilliums) suddenly budding and unfurling amid the leaf litter of my flower beds. I'd been looking out for them for days, and suddenly, there they were, a few days ago now (April 13).
I also have a magnificent patch of Trillium maculatum (spotted trillium). It stuns every year. The leaves are beautifully speckled and patterned, both above and below: