Trees or plants home-grown of Ireland? I would like to plant a tree of some sort of plant...

I would like to plant a tree of some sort of plant as a memorial to a friend that freshly past away. I hold a courtyard with a koi pond and some other plants around. I infer it would be a great way to remember him. I would similar to something apropriate to be used as a memorial. He was from Ireland, so to be exact why I would like it to be from Ireland.
Any suggestions?

Oh, and something that will grow/survive adjectives year around.

Thank you!
Should I use a fertilizer for my sweet...
Answers:    I think you are thaw enough to plant a shamrock. Do a search out on the Net for what type of soil you need and include that within your planting. You can make this grow contained by a mound shape approx 8 inches high.
Does Lowe's pass herb plants or pip kit...
It would sustain to know where you live, what climate you hold and what type of soil you have. Is it clay, caustic or nuetral etc.