These plants can be propagated by cuttings root and stem suckers and tip layering.
Blackberry hardwood cuttings.
Thornless types will not have thorns and vice versa.
Your mix will likely be some combination of peat moss coconut coir vermiculite perlite and or pine bark.
Clip cuttings from 1 8 inch diameter canes.
Propagating blackberries is easy.
Regardless of the method used for rooting blackberries the plant will characteristically resemble that of the parent variety especially as far as thorns are concerned i e.
I would use clonex my preference or dip and grow or another rooting powder or gel.
Yes blackberry cuttings are easy to propagate on a heat mat with grow light.
You need to use something over the plants to control humidity or a mister to keep them damp.
Fill your pots with a soil free mix.
My favorite way to get new blackberry plants is by rooting cuttings.
Many gardeners grow blackberries rubus fruticosus sometimes called brambles for their sweet mildly tart fruit and low maintenance care requirements.
Mist them often to keep the soil moist.
We only sell roots in lots of 100 cuttings.
Keep them in a bright shady place until roots develop.
Many people will recommend many different potting mixes i ve always had great results with promix but the main thing to look for is a soil free growing medium because this will minimize the changes for disease or unwanted fungal growth.
How to grow blackberries from cuttings.
Make cuttings approximately 15 inches long with 15 nodes per cutting.
The roots we use are from tissue culture blackberry plants these are the most vigorous and healthy rooting you can get.
The root cutting has a live percentage of 60 to 80 percent.