urit enim lini campum seges, urit auenae,
urunt Lethaeo perfusa papauera somno;
I would like translate this as:
"the crop of flax dries out the plain, the oats are drying out,
the poppies, drenched in the slumber of Lethe, are drying out." (I love the poppies drenched in Lethe's sleep.)
I assume this 'drying out' means they are taking that yellowy/golden grain color and are about ready to be harvested, but I don't quite understand ...