From Janet Baraclough’s garden

Yellow tree paeony (Paeonia lutea var. ludlowii)

I love this strong shrub,  which produces its lush gold flowers for
a few glorious weeks in May.
It will reach six feet high and wide, studded with lush bowls of
gold, and  when not in flower it’s still a handsome foliage plant
with elegant deeply cut leaves. Despite the exotic looks, it’s from
Tibet and as tough as old boots. Easy to propagate when the pods< split open  to reveal  shiny round black seeds the size of marrow peas..