Q.Reproduction by cuttings for leucadendrons
How do I prepare cuttings of Leucadendron plants for planting out?
Certified GKH Gardening Expert
Below are articles about rooting cuttings if you haven't done that yet. Once you have your rooted cuttings and the weather is prime to set them out, harden them off first. Set them in the shade for a few days, bringing them in at night, then back out in the morning. Gradually allow more and more sun.
http://mgsantaclara.ucanr.edu/garden-help/water-wise-plants/full-plant-list/?uid=60&ds=833
https://www.gardeningknowhow.com/garden-how-to/projects/rooting-plant-cuttings.htm