My favorite way to get new blackberry plants is by rooting cuttings.
Blackberry hardwood cuttings.
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.
Make cuttings approximately 15 inches long with 15 nodes per cutting.
Yes blackberry cuttings are easy to propagate on a heat mat with grow light.
Keep them in a bright shady place until roots develop.
You need to use something over the plants to control humidity or a mister to keep them damp.
Propagating blackberries is easy.
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.
Fill your pots with a soil free mix.
How to grow blackberries from cuttings.
Your mix will likely be some combination of peat moss coconut coir vermiculite perlite and or pine bark.
These plants can be propagated by cuttings root and stem suckers and tip layering.
Mist them often to keep the soil moist.
We only sell roots in lots of 100 cuttings.
Blackberry root cuttings another option for your planting needs is to plant the root cutting of a blackberry plant.
Many gardeners grow blackberries rubus fruticosus sometimes called brambles for their sweet mildly tart fruit and low maintenance care requirements.
Take hardwood cuttings between december 15 and january 31.
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.
I would use clonex my preference or dip and grow or another rooting powder or gel.
Thornless types will not have thorns and vice versa.