A perennial plant was one that lived longer than two years.
Quadrotriticale was a perennial, according to Spock. (TOS: "The Trouble with Tribbles")
Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.