Q.How To You Cut Back Leucospermum (High Gold) Plants.
The plants are about 2 1/2 years old and doing very well. We have two of them on a hillside and they need to be contained.
Certified GKH Gardening Expert
Pruning consist of deadheading, mainly. In order to control the spread, you will need to cut and dig out sections. In order to retain this, permanently, you can sink a garden border deep into the ground in the area that you want the plant to remain.
Here are some articles that will offer more information:
https://www.gardeningknowhow.com/ornamental/flowers/fgen/deadheading-flowers.htm
https://www.gardeningknowhow.com/ornamental/flowers/leucospermum/growing-leucospermum-flowers.htm
https://www.gardeningknowhow.com/plant-problems/weeds/controlling-rampant-plants-in-the-garden.htm