classic waka stream

While was it, that here,
tangled at the mugwort's root,
a village of falling
snow, a fence gone all to ruin—
this home I once knew so well?

Meaning
When did it happen—that this hedge I knew so well grew tangled at the mugwort's root, a village of falling snow gone all to ruin?
Commentary
Part One: Asagao

 On the pretext of calling on the Fifth Princess, Genji went out to the Momozono residence of Prince Shikibu on a snowy day. While the gatekeeper struggled to open the gate, its lock long rusted, Genji looked out over the ruined estate. What had seemed only yesterday, he felt, was already three years past; and he thought of himself, unable in this fleeting world to cast off the current life that is but a lodging, his heart still turning to the colors of trees and grass. Amid such musings he spoke this solitary poem, as if murmuring to himself.

 "When was it" means at some point, unnoticed. "At the mugwort's root" is the base of the mugwort, standing for the weeds overgrowing the ruined garden. "Tangled" is the roots of the grass matting together and choking. "A village of falling snow" is an old village in falling snow, where "furu" plays on "to fall" and "to grow old." "The fence gone to ruin" is the ruined hedge. The home he once knew has become, unnoticed, an old place gone to ruin and overgrown with mugwort—a poem carrying his sense of time's passing and the world's impermanence.
Author
Murasaki Shikibu
Source
Genji Monogatari
Other