Where can I buy the gorse bush?
Certified GKH Gardening Expert
It may be difficult to find this shrubby plant, as it is considered a weed in most areas, although it is quite ornamental in appearance. You may want to consider planting another shrub in the landscape. Here is more information about gorse bush and its control: https://www.gardeningknowhow.com/plant-problems/weeds/gorse-control-in-landscapes.htm
Can you verify the type of shrub you are referencing?