If it were the whole pamaps grass they were talking about, then yes. However they are just describing the grass itself - the grass whose feathery rods are raised above the plants' spikey leaves. I would change spike to spikey in this sentence though.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
Gingie... with feathery rods raised above the spike leaves.”No. You have a participle phrase modifying feathery rods, so you have to have a participle. raised is the past participle of raise; risen is the pas
Shouldn’t it be written this way?
... with feathery rods rose above the spike leaves.