As part of the celebration people wear either a leek or a daffodil in their lapels.
Click here to go to the BBC News Wales web page for more info.
In honor of the occasion (and because it was my lovely Dad's favourite flower) some freshly picked daffodils from my garden, with branches of forsythia and red buds of flowering quince.
I'll be linking this post to A Return to Loveliness with Kathy @ A Delightsome Life today
and I'll also be joining Liz @ Rose Vignettes for Fresh Cut Friday,
where there are bound to be masses of pretty spring vignettes to see.