I popped into Soil for Life again this weekend and was shown how to grow kale from cuttings.
Hopefully my rough illustrations and the attached photographs explain how easy it is to grow these and other new plants from cuttings. Note that cuttings should be taken from recent growth or shoot areas and can be around 20cm long (there’s no rule on this).
The same method can be applied to various woody herbs, trees, shrubs or herbaceous perennials (plants that live for two or more years and die down to ground level at the end of the growing season). Do some research to be sure or just take the risk, who could have guessed that kale can be propagated this way?
Note that you only have to cut off the top half of the stem’s top leaves if the leaves are large. Otherwise simply remove all the side leaves. Pinch out the top growing tip to create a bushier plant if you wish.
Keep your well spaced cuttings in a shady area and water/spritz the leaves of the plant a couple of times a day (keep the sand damp but not wet).
The plants should root within three weeks. From there you can harden them off by exposing them to a little more light and less water. Plant them once they have branched in about two to three months.