This grower is sure of this plant identification.
Large, Very vigorous, easy to grow. flowers for ages
Inula orientalis. This perennial has a rosette habit. The leaves are lance-shaped and medium green with single yellow-orange flowers blooming in late spring.
You will need to grow in a light, medium to heavy deep fertile well-drained soil with full sun.
Borders, meadows, wildlife
I have Inula plants, perennial Geraniums, lovely purple Erysiums, choisya(not quite ready yet) crocosmia monbrieta, and am working on more cuttings.
Would like physostegia virginiana 'variaegata' Daphnes, Doronicum, am open to suggestions