Thornless types will not have thorns and vice versa.
Blackberry hardwood cuttings.
Propagating blackberries is easy.
Mist them often to keep the soil moist.
I would use clonex my preference or dip and grow or another rooting powder or gel.
These plants can be propagated by cuttings root and stem suckers and tip layering.
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.
Many gardeners grow blackberries rubus fruticosus sometimes called brambles for their sweet mildly tart fruit and low maintenance care requirements.
Your mix will likely be some combination of peat moss coconut coir vermiculite perlite and or pine bark.
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.
Cut some 4 to 6 inch pieces off the tips of blackberry canes and place them in a pot of moist potting soil a moist mix of peat and sand works best.
Clip cuttings from 1 8 inch diameter canes.
How to grow blackberries from cuttings.
Fill your pots with a soil free mix.
The roots we use are from tissue culture blackberry plants these are the most vigorous and healthy rooting you can get.
Yes blackberry cuttings are easy to propagate on a heat mat with grow light.
We only sell roots in lots of 100 cuttings.
Keep them in a bright shady place until roots develop.
My favorite way to get new blackberry plants is by rooting cuttings.
You need to use something over the plants to control humidity or a mister to keep them damp.
Make cuttings approximately 15 inches long with 15 nodes per cutting.