Q: Can pepper corn plants (Piper nigrum) be grown in Texas? Where can I buy the plants? — P.M., Houston A: Possibly, but this South Asian tropical vine is cold-hardy to Zone 10. Most of the ...

Green peppercorns, white peppercorns and black peppercorns come from the same plant – the Piper nigrum vine. The stage at which they are picked and how they are processed determines the colour.