Oishigere Hirano no hara no ayasugi yo koki murasaki ni tachikasanu beku - Shui Wakashu(English Translation & Meaning)

生ひ茂れ平野の原のあや杉よ
濃き紫にたち重ぬべく

Roma-ji: Oishigere Hirano no hara no ayasugi yo koki murasaki ni tachikasanu beku
English Translation: Grow thick and grow tall,
you twilled cedars that stand
on Hirano's plain,
that you may rise and be cut
into layers of deepest purple!
Meaning: Grow thick, you twilled cedars of Hirano's plain, so that, rising tall, you may be cut into robe upon robe of deepest purple.
Commentary: Book Ten Kagura Songs 592

Headnote: "When Lord Minamoto no Tōfuru had a child born"
The poem celebrates the future of a newborn child, bidding the twilled cedars of Hirano's plain grow thick enough to be cut into robe upon robe of deep purple. The headnote shows it was sent when a child was born to Minamoto no Tōfuru. Laying the child's growth over the thriving cedars of the Hirano Shrine, it wishes that he may rise in rank, layering on robes of deep purple, the color of high rank. Following the pines through 591, it sings of the cedar as a tree of a god's shrine.
The author, written as "Motosuke," is Kiyohara no Motosuke. The father of Sei Shōnagon, he took part in compiling the Gosenshū as one of the Five Men of the Pear Chamber. He is counted among the Thirty-Six Immortal Poets.
Hirano is the site of the Hirano Shrine in Yamashiro Province, which is also counted among the tutelary shrines of the Minamoto clan.

First line, "oishigere," means "grow thick," and the poem breaks after this first line, ending on the imperative.
Second line, "Hirano no hara no," means "of Hirano's plain," the land where the Hirano Shrine stands.
Third line, "ayasugi yo," means "you cedars whose needles cross like twill," a direct address. The poem breaks here.
Fourth line, "koki murasaki ni," means "in deep purple," the color of robes worn by those of high rank.
Final line, "tachikasanu beku," is a pivot word: "tachi" means the cedars "standing" and robes being "cut" and layered. "Beku," the continuative form of the auxiliary "beshi," leaves the line trailing off.
Author: Kiyohara no Motosuke
Source: Shui Wakashu
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