Spenser, a jealous honorer of thine,
A forester deep in thy midmost trees,
Did last eve ask my promise to refine
Some English that might strive thine ear to please.
But, Elfin-poet, 'tis impossible
For an inhabitant of wintry earth
To rise, like Phœbus, with a golden quell,
Fire-wing'd, and make a morning in his mirth.
It is impossible to escape from toil
O' the sudden, and receive thy spiriting:
The flower must drink the nature of the soil

 Phœbus is the name used for Apollo when he is fulfilling his role as the sun-god specifically.  Phœbus Apollo quells the night by driving his chariot which tows the morning sun.