Part of Speech: Adjective

Definition: offensive to morality or decency; indecent; depraved

Source: Dictionary.com

Found in “Instructions on Not Giving Up” by Ada Limon

“ More than the fuchsia funnels breaking out
of the crabapple tree, more than the neighbor’s
almost obscene display of cherry limbs shoving
their cotton candy-colored blossoms to the slate
sky of Spring rains, it’s the greening of the trees
that really gets to me.” line1/line2/line3/line4/line5/line6

The speaker is saying that more than all those things that he/she listed including the indecent display of the cherry limbs shoving their cotton candy-colored blossoms to the slate sky of Spring rains that may make them feel good, it’s the greening of the trees
that really gets to them; where he/she means its the results of whatever is done that makes them feel better than those things.