Plant for 100 year 'birthday'

[TheSpottedZebra]

My granny would have been 100 this year and my mum expressed an interest in a place to mark the 'anniversary'. Ideally I'd like to have the same in my garden.

But I can hardly find anything with 100 or centenary, centennial in the name! Anyone have any ideas? I've looked at rose catalogues and amazingly drawing a blank.

We're both on clay and don't really want a tree.

Croton MagnifiCENT

Okay, I admit it's a bit of a stretch!

What about this rose - if you're a fan of pink!

www.classicroses.co.uk/roses/hazel-le-rougetel-shrub-rose.html

There's a daffodil called Centenary Gold - I think it might be a Cornish daffodil if that's of any relevance. But don't quote me on that!

qualitydaffodils.com/product/daffodils/centenary-gold-2y-ym-40-60cm-price-per-bulb/

There are also tulips called “royal centennial”. Orange and frilly.
You could probably find dahlias or bearded irises with centennial/century names too, there are so many different varieties.

There’s this bearded iris, Century Bound