Not sure why you are getting such a hard time over this, I know I have grown on and ended up with more plants than I need numerous times, Id suggest making sure they are in deep tubs and growing them in those or passing on to neighbours, friends or family if not
They're pretty small not big enough for their full size. Slightly larger than the medium sized tubs bedding plants come in. I'll probaly wait till I lift my tulip bulbs and plant them in.
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Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.