I stated growing wasabi last year. They are looking real good for a harvest this year. I have been harvesting the leaves all along and found they don't develop the flavor till the second year.
Ok, where does one get wasabi starts? Would they be happy in zone 8A deep south?
If you like wasabi, try horseradish.
Huge leaves that are edible and have a mild horseradish flavor.
But beware! Grows like a weed, and will send out roots and form new branches from them.
Loves water, so give it as much as it will take.