Australian fir is usually propagated by seed, but it can also be propagated by cutting. The suitable temperature for the growth of Australian fir is 18-28 ℃, which is also easier to root in this temperature range, so the best time to choose spring temperature can fit, which is more helpful for root growth.
Select a plant, cut the front 2-3 sections of strong branches that are easy to take root, remove the lower leaves, prevent rot, and then soak them in water. Generally, the main part of the branches or the long branches are selected. If other branches are selected for cutting, the plant may not grow properly.
The substrate used for cutting requires air permeability and drainage. It can be coarse sand or vermiculite, which will not cause water accumulation and will be easier to root.
After preparation, it can be operated. The prepared soil can be watered and moistened, and the branches can be inserted obliquely to maintain a temperature of about 25 ℃, without too much deviation. It also needs to spray water frequently, so as to maintain the surrounding humidity and promote rooting more easily. Put it in the place with astigmatism to wait for rooting, do not touch strong light, it will take root after a period of time.