Look what I found.

Thanks to Blip I can actually state when it was bought. Even if it didn't get a look in.
It took the stage in '16, and April year, about 11 or so months apart.
In April this year it was no bigger than last year and I wasn't even sure it had the same number of shoots.
But, as the song says ... "Baby look at you now."
I seem to have confounded the experts; not 100% sure if it was "Gardeners' Question Time", but I heard a bloke say you usually had to plant it thrice before you were lucky.
I shall now keep all spare digits crossed and hope I don't pop my clogs before I see a flower.

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Addendum - Still struggling.