Can become floppy, but regular deadheading will normally keep them upright. After bloom, the foliage turns yellow/brown and dies back. At this point, I cut the entire plant back hard. I will often then get a second low flush of foliage only. Does not self-seed aggressively in my PNW garden, just some extra seedlings at the foot of the mature plants, easy enough to control (or allow your clump to expand depending on your needs).
How to completely surprise yourself in your own garden:
This poppy pairs nicely with Orlaya grandiflora.
Quoted from Seedaholic.com website:
This plant self-sows freely. Deadhead if you do not want volunteer seedlings the following year. Average water needs.
Black Swan is a spectacular annual poppy. Large, deep burgundy purple frilled flowers. Can self seed. Look for seed heads in the fall.
Honey bees get nectar and pollen from this plant.
