Pistachio

Pistachio is a plant only available in Plants vs. Zombies: All Stars. It shoots green sparks/lasers at zombies which do normal damage. Its upgrade is the Acorn. Pistachio is actually a desert plant, and is highly tolerant of saline soil. It has been reported to grow well when irrigated with water having 3,000–4,000 ppm of soluble salts.

Plant Food Upgrade
Heals the most damaged plant for a period of time.

Trivia

 * In reality, the shell of the pistachio is naturally a beige color, but it is sometimes dyed red or green in commercial pistachios.