Are Orontium and Cirsium both perennial plants?
no
Title: Perennial grain
Passage: A perennial grain is a grain crop that lives and remains productive for two or more years.  While many fruit, nut and forage crops are long-lived perennial plants, all major grain crops presently used in large-scale agriculture are annuals or short-lived perennials grown as annuals.  Scientists from several nations have argued that perennial versions of today's grain crops could be developed and that these perennial grains could make grain agriculture more sustainable.
Title: Orontium
Passage: Orontium , sometimes called golden-club, is a genus of flowering plants in the family Araceae.  The single living species in the genus is "Orontium aquaticum", while the two other described species, "Orontium mackii" and "Orontium wolfei", are known from fossils.
Title: Cirsium
Passage: Cirsium is a genus of perennial and biennial flowering plants in the Asteraceae, one of several genera known commonly as thistles.  They are more precisely known as plume thistles.  These differ from other thistle genera ("Carduus", "Silybum" and "Onopordum") in having feathered hairs to their achenes.  The other genera have a pappus of simple unbranched hairs.
Cirsium Orontium