https://www.carnivorousplantso...
When searching... I find lots of mention of thorns on various forums... lots of pictures... but when I go to the seed catalogues, no pictures of thorns... This seems to be a trait hybridizers find undesirable...
While the litchi tomato is marketed as a thorny plant... the eggplant?
not finding it... reckon you'll have to plant a bunch of seed, and save the seed of the ones with the desirable trait.
https://www.rareseeds.com/eggp...