Pics 1, 4 & 5 are various kinds of poppy. 2 & 3 looks like nigella and cosmos. There are three Fat hen (Chenopodium album) weed seedlings surrounding the Opium poppy (Papaver somniferum) in pic1.
A trowel in the hand is worth a thousand lost under a bush.
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Ill second nigella for No 2
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.