Doronicum orientale is an easy plant that does not require much attention. It does well in all kinds of garden soil, but the foliage does not look as nice if the soil is too dry.
A useful tip is to remove spent flowers so that new buds can grow. And after about 4 years, you can split the plant to propagate it. This is not only good for the plant, but it also gives you extra specimens to enjoy!
General care tips can be found here