For a couple of weeks each spring, the new growth on trees couples with the changing light to make the trees in our area glow an almost neon green. It's a time of year when I'm thankful for sunglasses!
I've never been to Ireland and I don't imagine our area could compare, but the green is pretty intense right now. Coincidentally, in some years the neon green effect arrives in time for St. Patrick's Day on March 17. This year, because of all our hard freezes last winter, we are getting the effect a little late.
The picture, above, gives only a small glimmer of what this neon green season is like.