だい霜降 そうこう枝尺 えだしゃくであれば
daisō kōeda shakudeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 大霜降枝尺

1. If/when the great frost descends and branches are a foot long.; If the great frost descends and branches reach a foot.

Ba Conditional