Japanese Rose not flowering

Question

When I bought it, it had lots of flowers on it, last year there were less, this year it maybe had three blooms. It looks bright green and healthy, like its happy, but not happy enough to flower???

Its facing east so gets morning sun and then afternoon shade..

Answer 1

Review the care information in the link below to help you.
https://www.gardeningknowhow.com/ornamental/shrubs/japanese-kerria/growing-japanese-kerria.htm