The roots we use are from tissue culture blackberry plants these are the most vigorous and healthy rooting you can get.
Blackberry hardwood cuttings.
How to grow blackberries from cuttings.
Make cuttings approximately 15 inches long with 15 nodes per cutting.
Fill your pots with a soil free mix.
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.
Many gardeners grow blackberries rubus fruticosus sometimes called brambles for their sweet mildly tart fruit and low maintenance care requirements.
Propagating blackberries is easy.
Clip cuttings from 1 8 inch diameter canes.
Take hardwood cuttings between december 15 and january 31.
You need to use something over the plants to control humidity or a mister to keep them damp.
My favorite way to get new blackberry plants is by rooting cuttings.
Keep them in a bright shady place until roots develop.
Mist them often to keep the soil moist.
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.
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.
We only sell roots in lots of 100 cuttings.
The root cutting has a live percentage of 60 to 80 percent.
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.