Yes blackberry cuttings are easy to propagate on a heat mat with grow light.
Blackberry hardwood cuttings.
We only sell roots in lots of 100 cuttings.
The root cutting has a live percentage of 60 to 80 percent.
My favorite way to get new blackberry plants is by rooting cuttings.
Make cuttings approximately 15 inches long with 15 nodes per cutting.
These plants can be propagated by cuttings root and stem suckers and tip layering.
Many gardeners grow blackberries rubus fruticosus sometimes called brambles for their sweet mildly tart fruit and low maintenance care requirements.
Fill your pots with a soil free mix.
Clip cuttings from 1 8 inch diameter canes.
Your mix will likely be some combination of peat moss coconut coir vermiculite perlite and or pine bark.
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.
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.
Mist them often to keep the soil moist.
I would use clonex my preference or dip and grow or another rooting powder or gel.
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.
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.
How to grow blackberries from cuttings.
The roots we use are from tissue culture blackberry plants these are the most vigorous and healthy rooting you can get.