Q.Purple datura
Can you get a new starter off a plant. Mine is about 4 foot tall and would like to get another starter for a new plant.
Seeds can be collected in late summer after they have dried on the vine.
You can direct plant right into the garden at this point.
Root cuttings can be taken also.
Use a trowel to unearth a section of datura's thick roots.
Prune a 3- to 4-inch section of the thickest roots for each datura plant that you intend to grow. Do not prune more than one-third of a single datura plant's roots during any one season. Re-bury the parent plant's roots when you have finished pruning.
Plant each root section 1 inch deep, cut-section up and 1 foot apart.
https://www.gardeningknowhow.com/ornamental/flowers/datura/growing-datura-trumpet-flower.htm