Dear Plutarch: your "selery" could be worth millions in phytoremediation in many areas of the world that desperately need desalinization.
Indeed, wwh, that would be a bit like turning salt into gold. Isn't it true that at one time salt was so rare that it was used as currency. This would give new meaning to my coinage. But, one drawback, wwh, who would want to eat their Selery? They would certainly want to stalk up on it. I envision vast stalkpiles of Selery, wwh. Selery, Selery everywhere, and not a stalk to eat.