I've decided to plant these in a nice deep pot come Autumn, and I'm wondering what would make for good companion planting to flower from July onwards?
They'll be over by June ... I'd have just them in the pot and move it somewhere quiet and out of the way once they've flowered. Feed them up and leave them be ... otherwise you've just got them sticking up looking a bit odd amongst other plants.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.