"His heart was in his garden..."

His heart was in his garden; but his brain
Wandered at will among the fiery stars:
Bards, heroes, prophets, Homers, Hamilcars,
With many angels, stood, his eye to gain;
The devils, too, were his familiars.
And yet the cunning florist held his eyes
Close to the ground,--a tulip-bulb his prize,--
And talked of tan and bone-dust, cutworms, grubs,
As though all Nature held no higher strain;
Or, if he spoke of Art, he made the theme
Flow through box-borders, turf, and flower-tubs;
Or, like a garden-engine's, steered the stream,--
Now spouted rainbows to the silent skies;
Now kept it flat, and raked the walks and shrubs.