Depends which Poppy it is, the giant flowering perennials are sterile, you have to take root cuttings for propagation, you can leave the heads on if you like them, they add interest to you garden.
Gardening on the wild, windy west side of Dartmoor.
Once the leaves have pretty well died you can cut them down to about 3 or 4 inches. But if you want seeds you have to leave the pod on the plant until it is ripe. You can tell because the seeds will shake out like a pepper pot. There's SO much to enjoy in a garden - good luck for your future as a gardener!
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There's SO much to enjoy in a garden - good luck for your future as a gardener!
In the sticks near Peterborough