Godi wish i could find where i put that peice of paper i wrote it on! Why do p plant names gotta be sooo long

Not sure, but this looks similar to our "river white" granite, which also sometimes goes by the names"white river" or "valley white." The slabs can vary greatly, and from what I can see on my monitor, your inspiration slab has a bit more carmel tones than ours, which looks most like the 4th and 5th photos in the link below. Hth Here is a link that might be useful: River white granite

if it goes outdoors in the pot.. in full shade ... its called hardening off ... or it will sunburn... and that huge plant in rather small pot.. will be a watering nightmare ... hence.. shade helps all that ... never transplant in flower ...unless you dont mind losing the flower .... and never when the heat of summer is coming ... there is a proper planting time for things... and the hot time of year.. usually isnt when ... ken

A close-up pic of the flowers might help. I tried googling "white flowers with pink center" and didn't find anything but possibly a flowering cherry would be the closest.