Holus (genitive: holeris, n).
Cauliflower
Tomato (Mexico).
carrot is Latin for orange, so yes
"Vegetable" is of Latin origin. The Late Latin adjective vegetabilis meant "invigorating; enlivening" (from the verb vegetare, "to invigorate"). The word came into English via French, where it had the meaning "growing; flourishing".
Onion Comes from Latin unio, unionis - large pearl.
Latin for onion means "large pearl".
Broccoli
Its Collard Greens, and it gets its name from the latin word "Colla" which means leafy green
Latin opium, from Greek opion: "poppy juice, poppy," derived from opos: "vegetable juice."
A black salsify is a perennial member of the sunflower family, Latin name Scorzonera hispanica, which is cultivated as a root vegetable.
It comes, ultimately, from the PIE root *weg- meaning "be strong, lively".How it came to mean something that isn't normally known for being either strong or lively is through a chain of Latin words with subtly different meanings from vegere "active" through Medievel Latin vegetabilis "growing" and then to Old French vegetable "living, fit to live".
No, it is Latin. It has a French name because it is very popular in Garconeria le Riviera, near the French Riviera, Cannes.