1)
What is the comparison to a blossom?
1.
Malbim: After a blossom sprouts, it wilts and is cut off. From then, the plant begins to wither. So man, after he fathers and sends out his seed after he blossoms in middle-age, he descends - old age.
2)
How is he like a shadow that flees?
1.
Malbim: He constantly approaches death.
