Is this a delphinium? I lost track of what I planted last year (rookie error), but all I remember planting in this area was a peony, a hollyhock and a delphinium. It hasn't flowered at all this year, but not sure if being swamped by forget-me-nots may be the problem.

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Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
It's also a good idea to feed well when they start back into growth - a slow release food is ideal. A mulch of compost round the plant is also beneficial, but don't cover the main crown of the plant.
I live in west central Scotland - not where that photo is...
I live in west central Scotland - not where that photo is...