One species that sometimes needs staking is oriental poppies. An easy trick is to place a peony cage (or other shorter perennial cage, like a small tomato cage) over the plant when it's still ...

Peony poppies (Papaver paeoniflorum) have dense peony or rose-like blooms. They grow effortlessly from seed and are close relatives of opium poppy (Papaver somniferum). Be advised that any poppy ...