Q.yellow flowering hedge
I would like to grow a yellow flowering hedge (border). Which shrub would be most suitable, please? My area isn’t very long, it gets sun in the afternoon and the shrubs will be grown against a wall. I just want a show of yellow rather than a protective hedge really. Something fairly easy to keep but edging that gives the most vibrant show. Thank you.

I have listed several links for you with many possible yellow choices.
https://www.gardeningknowhow.com/ornamental/shrubs/forsythia/forsythia-pruning.htm
https://www.gardeningknowhow.com/ornamental/shrubs/potentilla/growing-potentilla-shrubs.htm
https://www.gardeningknowhow.com/ornamental/shrubs/witch-hazel/growing-witch-hazel-shrubs.htm
https://www.gardeningknowhow.com/ornamental/shrubs/esperanza/esperanza-plant.htm
https://www.gardeningknowhow.com/ornamental/shrubs/carolina-allspice/carolina-allspice-shrubs.htm