drop-ripe

They were, indeed, the best nathured couple in Europe; they would lend you a spade or a hook in potato time or harvest, out of pure kindness, though their own corn, that was drop-ripe, should be uncut, or their potatoes, that were a tramping every day with their own cows or those of the neighbors, should be undug -- all for fraid of being thought unneighborly.

The Ned M'Keown Stories Traits And Stories Of The Irish Peasantry, The Works of William Carleton, Volume Three William Carleton 1831

[Some editors have pleased themselves with tracing the sentiments of this song in certain street ballads: it resembles them as much as a sour sloe resembles a drop-ripe damson.]

The Complete Works of Robert Burns: Containing his Poems, Songs, and Correspondence. With a New Life of the Poet, and Notices, Critical and Biographical by Allan Cunningham Robert Burns 1777

"Larry would keep his word, though his own corn was drop-ripe; and havin 'once undertaken the job, he couldn't give it up till he'd, finish it off dacently.

The Ned M'Keown Stories Traits And Stories Of The Irish Peasantry, The Works of William Carleton, Volume Three William Carleton 1831