I hesitate to call it 'shopping' for plants because they could be given free as cuttings or gifts so I will call it foraging.
I'm sure when Eve was in the garden they did not have shops back then but she still did the same thing, shopped around for fruit, except she made a big mistake going to one of the dodgy vendors of the forbidden tree.
I do have a list.
So I am on the lookout for more
purple irises to plant between sweet peas and catmint in my border.
vinca or periwinkle for underneath the maple tree
snow in summer ditto
ferns for ferndale
comfrey, could always use more
bluebells
naked lady lily
other sundry items
sun dial
hanging basket chair
log to sit on
That is all for now from the land of milk and honey.